Croatia, officially the Republic of Croatia, is a country in Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herzegovina and Montenegro to the southeast, and shares a maritime border with Italy to the west. The Croatian archipelago contains over 1,000 islands and islets, the largest overseas territory on the Adriatic Sea. Its capital, largest city and main cultural and economic centre is Zagreb. Major urban centers include Split, Rijeka, and Osijek. The country is composed of twenty counties spanning 56,594 square kilometres (21,851 square miles) within four administrative regions. Croatia has a population of nearly 3.9 million as of 2026.
Croatian history began with the 6th century arrival of the Croats to Roman Illyria. Settled as two duchies a century later, Croatia was granted independence in 878 under Duke Branimir and elevated into a kingdom under King Tomislav in 925. The Trpimirović dynastic succession crisis placed Croatia into a personal union with Hungary in 1102. In 1527, amid Ottoman conflict, Croatia aligned with the Habsburg monarchy. It reorganized into the State of Slovenes, Croats, and Serbs before merging into the Kingdom of Yugoslavia in 1918. During World War II, most of Croatia was invaded by the Axis powers who installed a puppet state known as the Independent State of Croatia. A resistance movement restored sovereignty, emerging as the Socialist Republic of Croatia within the Socialist Federal Republic of Yugoslavia in 1943. Croatia declared independence from Yugoslavia in 1991, successfully fighting the War of Independence until 1995.
Modern Croatia is a representative democracy with a prime minister, president, and unicameral parliament. Its constitution ensures separation of powers between the executive, legislative, and judicial branches. Croatian politics reflect a multi-party system. Croatia is part of many international organizations and forums including the European Union, United Nations, WTO, and NATO, among others. It exerts regional influence as a small power in Europe, particularly within neighboring Southeast Europe. Since 1999, the Croatian Armed Forces have deployed internationally for a variety of peacekeeping missions and military interventions. Croatia was elected to serve on the non-permanent seat of the UN Security Council from 2008 to 2009.
A developed country, Croatia has an advanced economy considered high-income and dominated by its service, industrial, and agricultural sectors. Its tourism sector is prominent, generating significant economic activity across the country. Croatia has heavily invested in infrastructure, especially in transport routes and facilities along European corridors. An emerging energy power in Europe, it has strategic investments in liquefied natural gas, geothermal networks, and electric transport. It has extensive biodiversity, wildlife, and natural resources across its geography. Croatia provides social security, universal health care, and subsidized primary and secondary education while supporting culture through media and publishing.
Etymology
Croatia's non-native name derives from Medieval Latin Croātia, itself a derivation of North-West Slavic *Xərwate, by liquid metathesis from Common Slavic period *Xorvat, from proposed Proto-Slavic *Xъrvátъ which possibly comes from the 3rd-century Scytho-Sarmatian form attested in the Tanais Tablets as Χοροάθος (Khoroáthos. Alternate forms are Khoróatos and Khoroúathos). The origin of the ethnonym is uncertain, but most probably is from Proto-Ossetian / Alanian *xurvæt- or *xurvāt-, in the meaning of "one who guards" ("guardian, protector").
The oldest preserved record of the Croatian ethnonym's native variation *xъrvatъ is of the variable stem, attested in the Baška tablet in style zvъnъmirъ kralъ xrъvatъskъ ("Zvonimir, Croatian king"), while the Latin variation Croatorum is archaeologically confirmed on a church inscription found in Bijaći near Trogir dated to the end of the 8th or early 9th century. The presumably oldest stone inscription with fully preserved ethnonym is the 9th-century Branimir inscription found near Benkovac, where Duke Branimir is styled Dux Cruatorvm, likely dated between 879 and 892, during his rule. The Latin term Chroatorum is attributed to a charter of Duke Trpimir I of Croatia, dated to 852 in a 1568 copy of a lost original, but it is not certain if the original was found to be older than the Branimir inscription.
History
Prehistory and antiquity
The area known as modern Croatia was inhabited throughout the prehistoric period. Neanderthal fossils dating to the middle Palaeolithic period were unearthed in northern Croatia, best presented at the Krapina site. Remnants of Neolithic and Chalcolithic cultures were found in all regions. The largest proportion of sites is in the valleys of northern Croatia. The most significant are Baden, Starčevo, and Vučedol cultures. Iron Age hosted the early Illyrian Hallstatt culture and the Celtic La Tène culture.
The region of modern-day Croatia was settled by Illyrians and Liburnians, while the first Greek colonies were established on the islands of Hvar, Korčula, and Vis. In 9 AD, the territory of today's Croatia became part of the Roman Empire. Emperor Diocletian was native to the region. He had a large palace built in Split, to which he retired after abdicating in AD 305. During the 5th century, the last de jure Western Roman Emperor Julius Nepos ruled a small realm from the palace after fleeing Italy in 475.
Middle Ages
The Roman period ends with Avar and Croat invasions in the late 6th and first half of the 7th century and the destruction of almost all Roman towns. Roman survivors retreated to more favourable sites on the coast, islands, and mountains. The city of Dubrovnik was founded by such survivors from Epidaurum.
The ethnogenesis of the Croats is a subject of scholarly discussion, reflecting the complexity of early medieval migrations and the integration of diverse populations. The predominant scholarly consensus, based on historical chronicles, proposes that the White Croats originated as a Slavic group that migrated from White Croatia during the Migration Period. Conversely, the Iranian theory proposes Sarmatian-Alanic origin of Proto-Croats, based on Tanais Tablets containing Ancient Greek inscriptions of given names Χορούαθος, Χοροάθος, and Χορόαθος (Khoroúathos, Khoroáthos, and Khoróathos) and their interpretation as anthroponyms related to the Croatian ethnonym.
According to the work De Administrando Imperio written by 10th-century Byzantine Emperor Constantine VII, Croats settled in the Roman province of Dalmatia in the first half of the 7th century after they defeated the Avars. Although there exist some scholarly disputes about the account's reliability and interpretation, recent archaeological data has established that the migration and settlement of the Slavs/Croats was in the late 6th and early 7th century. Eventually, a dukedom was formed, Duchy of Croatia, ruled by Borna, as attested by chronicles of Einhard starting in 818. The record represents the first document of Croatian realms, vassal states of Francia at the time. Its neighbor to the North was Principality of Lower Pannonia, at the time ruled by duke Ljudevit who ruled the territories between the Drava and Sava rivers, centred from his fort at Sisak. This population and territory throughout history was tightly related and connected to Croats and Croatia.
Christianisation of Croats began in the 7th century at the time of archon Porga of Croatia, initially probably encompassed only the elite and related people, but mostly finished by the 9th century. The Frankish overlordship ended during the reign of Mislav, or his successor Trpimir I. The native Croatian royal dynasty was founded by duke Trpimir I in the mid 9th century, who defeated the Byzantine and Bulgarian forces. The first native Croatian ruler recognised by the Pope was duke Branimir, who received papal recognition from Pope John VIII on 7 June 879. Tomislav was the first king of Croatia, noted as such in a letter of Pope John X in 925. Tomislav defeated Hungarian and Bulgarian invasions. The medieval Croatian kingdom reached its peak in the 11th century during the reigns of Petar Krešimir IV (1058–1074) and Dmitar Zvonimir (1075–1089). When Stjepan II died in 1091, ending the Trpimirović dynasty, Dmitar Zvonimir's brother-in-law Ladislaus I of Hungary claimed the Croatian crown. This led to a war and personal union with Hungary in 1102 under Coloman.
Union with Hungary and Austria
For the next four centuries, the Kingdom of Croatia was ruled by the Sabor (parliament) and a Ban (viceroy) appointed by the king. This period saw the rise of influential nobility such as the Frankopan and Šubić families to prominence, and ultimately numerous Bans from the two families. An increasing threat of Ottoman conquest and a struggle against the Republic of Venice for control of coastal areas ensued. The Venetians controlled most of Dalmatia by 1428, except the city-state of Dubrovnik, which became independent. Ottoman conquests led to the 1493 Battle of Krbava field and the 1526 Battle of Mohács, both ending in decisive Ottoman victories. King Louis II died at Mohács, and in 1527, the Croatian Parliament met in Cetin and chose Ferdinand I of the House of Habsburg as the new ruler of Croatia, under the condition that he protects Croatia against the Ottoman Empire while respecting its political rights.
Following the decisive Ottoman victories, Croatia was split into civilian and military territories in 1538. The military territories became known as the Croatian Military Frontier and were under direct Habsburg control. Ottoman advances in Croatia continued until the 1593 Battle of Sisak, the first decisive Ottoman defeat, when borders stabilised. During the Great Turkish War (1683–1698), Slavonia was regained, but western Bosnia, which had been part of Croatia before the Ottoman conquest, remained outside Croatian control. The present-day border between the two countries is a remnant of this outcome. Dalmatia, the southern part of the border, was similarly defined by the Fifth and the Seventh Ottoman–Venetian Wars.
The Ottoman wars drove demographic changes. During the 16th century, Croats from western and northern Bosnia, Lika, Krbava, the area between the rivers Una and Kupa, and especially from western Slavonia, migrated towards Austria. Present-day Burgenland Croats are direct descendants of these settlers. To replace the fleeing population, the Habsburgs encouraged Bosnians to provide military service in the Military Frontier. The Croatian Parliament supported King Charles III's Pragmatic Sanction and signed their own Pragmatic Sanction in 1712. Subsequently, the emperor pledged to respect all privileges and political rights of the Kingdom of Croatia, and Queen Maria Theresa made significant contributions to Croatian affairs, such as introducing compulsory education.
Between 1797 and 1809, the First French Empire increasingly occupied the eastern Adriatic coastline and its hinterland, ending the Venetian and the Ragusan republics, establishing the Illyrian Provinces. In response, the Royal Navy blockaded the Adriatic Sea, leading to the Battle of Vis in 1811. The Illyrian provinces were captured by the Austrians in 1813 and absorbed by the Austrian Empire following the Congress of Vienna in 1815. This led to the formation of the Kingdom of Dalmatia and the restoration of the Croatian Littoral to the Kingdom of Croatia under one crown. The 1830s and 1840s featured romantic nationalism that inspired the Croatian National Revival, a political and cultural campaign advocating the unity of South Slavs within the empire. Its primary focus was establishing a standard language as a counterweight to Hungarian while promoting Croatian literature and culture. During the Hungarian Revolution of 1848, Croatia sided with Austria. Ban Josip Jelačić helped defeat the Hungarians in 1849 and ushered in a Germanisation policy. This is around the time that Nikola Tesla was born in Smiljan.
By the 1860s, the failure of the policy became apparent, leading to the Austro-Hungarian Compromise of 1867. The creation of a personal union between the Austrian Empire and the Kingdom of Hungary followed. The treaty left Croatia's status to Hungary, which was resolved by the Croatian–Hungarian Settlement of 1868 when the kingdoms of Croatia and Slavonia were united. The Kingdom of Dalmatia remained under de facto Austrian control, while Rijeka retained the status of corpus separatum previously introduced in 1779. After Austria-Hungary occupied Bosnia and Herzegovina following the 1878 Treaty of Berlin, the Military Frontier was abolished. The Croatian and Slavonian sectors of the Frontier returned to Croatia in 1881, under provisions of the Croatian–Hungarian Settlement. Renewed efforts to reform Austria-Hungary, entailing federalisation with Croatia as a federal unit, were stopped by World War I.
The World Wars and Yugoslavia
On 29 October 1918, the Croatian Parliament (Sabor) declared independence and decided to join the newly formed State of Slovenes, Croats, and Serbs, which in turn entered into union with the Kingdom of Serbia on 4 December 1918 to form the Kingdom of Serbs, Croats, and Slovenes. The Croatian Parliament never ratified the union with Serbia and Montenegro. The 1921 constitution defining the country as a unitary state and abolition of Croatian Parliament and historical administrative divisions effectively ended Croatian autonomy.
The new constitution was opposed by the most widely supported national political party—the Croatian Peasant Party (HSS) led by Stjepan Radić. The political situation deteriorated further as Radić was assassinated in the National Assembly by NRS member, Serbian nationalist politician Puniša Račić in 1928, culminating in King Alexander I's establishment of the 6 January Dictatorship in 1929. The dictatorship formally ended in 1931 when the king imposed a more unitary constitution. The HSS, now led by Vladko Maček, continued to advocate federalisation, resulting in the Cvetković–Maček Agreement of August 1939 and the autonomous Banovina of Croatia. The Yugoslav government retained control of defence, internal security, foreign affairs, trade, and transport while other matters were left to the Croatian Sabor and a crown-appointed Ban.
In April 1941, Yugoslavia was invaded by Nazi Germany and Fascist Italy. Following the invasion, a German-Italian installed puppet state named the Independent State of Croatia (NDH) was established. Most of Croatia, Bosnia and Herzegovina, and the region of Syrmia were incorporated into this state. Parts of Dalmatia were annexed by Italy, Hungary annexed the northern Croatian regions of Baranja and Međimurje. The NDH regime was led by Ante Pavelić and the ultranationalist Ustaše, a fringe movement in pre-war Croatia. With German and Italian military and political support, the regime introduced racial laws and launched a genocide campaign against Serbs, Jews, and Roma. Many were imprisoned in concentration camps; the largest was the Jasenovac complex. Anti-fascist Croats were targeted by the regime as well. Several concentration camps (most notably the Rab, Gonars and Molat camps) were established in Italian-occupied territories, mostly for Slovenes and Croats. At the same time, the Yugoslav Royalist and Serbian nationalist Chetniks pursued a genocidal campaign against Croats and Muslims, aided by Italy. Nazi German forces committed crimes and reprisals against civilians in retaliation for Partisan actions, such as in the villages of Kamešnica and Lipa in 1944.
A resistance movement emerged. On 22 June 1941, the 1st Sisak Partisan Detachment was formed near Sisak, the first military unit formed by a resistance movement in occupied Europe. That sparked the beginning of the Yugoslav Partisan movement, a communist, multi-ethnic anti-fascist resistance group led by Josip Broz Tito. In ethnic terms, Croats were the second-largest contributors to the Partisan movement after Serbs. In per capita terms, Croats contributed proportionately to their population within Yugoslavia. By May 1944 (according to Tito), Croats made up 30% of the Partisan's ethnic composition, despite making up 22% of the population. The movement grew fast, and at the Tehran Conference in December 1943, the Partisans gained recognition from the Allies.
With Allied support in logistics, equipment, training and airpower, and with the assistance of Soviet troops taking part in the 1944 Belgrade Offensive, the Partisans gained control of Yugoslavia and the border regions of Italy and Austria by May 1945. Members of the NDH armed forces and other Axis troops, as well as civilians, were in retreat towards Austria. Following their surrender, many were killed in the Yugoslav death march of Nazi collaborators. In the following years, ethnic Germans faced persecution in Yugoslavia, and many were interned. The political aspirations of the Partisan movement were reflected in the State Anti-fascist Council for the National Liberation of Croatia, which developed in 1943 as the bearer of Croatian statehood and later transformed into the Parliament in 1945, and AVNOJ—its counterpart at the Yugoslav level.
Based on the studies on wartime and post-war casualties by demographer Vladimir Žerjavić and statistician Bogoljub Kočović, a total of 295,000 people from the territory (not including territories ceded from Italy after the war) died, which amounted to 7.3% of the population, among whom were 125–137,000 Serbs, 118–124,000 Croats, 16–17,000 Jews, and 15,000 Roma. In addition, from areas joined to Croatia after the war, a total of 32,000 people died, among whom 16,000 were Italians and 15,000 were Croats. Approximately 200,000 Croats from the entirety of Yugoslavia (including Croatia) and abroad were killed in total throughout the war and its immediate aftermath, approximately 5.4% of the population.
After World War II, Croatia became a single-party socialist federal unit of the SFR Yugoslavia, ruled by the Communists, but having a degree of autonomy within the federation. In 1967, Croatian authors and linguists published a Declaration on the Status and Name of the Croatian Standard Language demanding equal treatment for their language. The declaration contributed to a national movement seeking greater civil rights and redistribution of the Yugoslav economy, culminating in the Croatian Spring of 1971, which was suppressed by Yugoslav leadership. Still, the 1974 Yugoslav Constitution gave increased autonomy to federal units, basically fulfilling a goal of the Croatian Spring and providing a legal basis for independence of the federative constituents. At the same time, there was a substantial Croatian diaspora during the Cold War, which included efforts aimed at forming a government in exile.
Following Tito's death in 1980, the political situation in Yugoslavia deteriorated. National tension was fanned by the 1986 SANU Memorandum and the 1989 coups in Vojvodina, Kosovo, and Montenegro. In January 1990, the Communist Party fragmented along national lines, with the Croatian faction demanding a looser federation. In the same year, the first multi-party elections were held in Croatia, while Franjo Tuđman's win exacerbated nationalist tensions. Some of the Serbs in Croatia left Sabor and declared autonomy of the unrecognised Republic of Serbian Krajina, intent on achieving independence from Croatia.
Independence
As tensions rose, Croatia declared independence on 25 June 1991. The full implementation of the declaration only came into effect after a three-month moratorium on the decision on 8 October 1991. In the meantime, tensions escalated into overt war when the Serbian-controlled Yugoslav People's Army (JNA) and various Serb paramilitary groups attacked Croatia. By the end of 1991, a high-intensity conflict fought along a wide front reduced Croatia's control to about two-thirds of its territory. Serb paramilitary groups then began a campaign of killing, terror, and expulsion of the Croats in the occupied territories, killing thousands of Croat civilians and expelling or displacing as many as 400,000–500,000 Croats and other non-Serbs from their homes. Serbs living in Croatian towns, especially those near the front lines, were subjected to various forms of discrimination. Croatian Serbs in Eastern and Western Slavonia and parts of the Krajina were forced to flee or were expelled by Croatian forces, though on a restricted scale and in lesser numbers. The Croatian Government publicly deplored these practices and sought to stop them, indicating that they were not a part of the Government's policy.
On 15 January 1992, Croatia gained diplomatic recognition by the European Economic Community, followed by the United Nations. The war effectively ended in August 1995 with a decisive victory by Croatia; the event is commemorated each year on 5 August as Victory and Homeland Thanksgiving Day and the Day of Croatian Defenders. Following the Croatian victory, about 200,000 Serbs from the self-proclaimed Republic of Serbian Krajina fled the region and hundreds of mainly elderly Serb civilians were killed in the aftermath of the military operation, often in revenge attacks, accompanied by looting, seizing or burning down of their property. Approximately half have returned since then. Some 19,000 Serb homes were subsequently settled by Croat refugees from Bosnia and Herzegovina. The remaining occupied areas were restored to Croatia following the Erdut Agreement of November 1995, concluding with the UNTAES mission in January 1998. Most sources number the war deaths at around 20,000.
At the turn of the 21st century, Croatia experienced sustained economic growth as the nation democratized but struggled with public corruption and bouts of unemployment. The Croatian Parliament passed a set of constitutional amendments in November 2000 and March 2001 to convert from a bicameral to a unicameral body, later limiting presidential powers. Croatia joined the Partnership for Peace in May 2000 and the World Trade Organization in November 2000. It joined the military alliance NATO in April 2009. Croatia was elected to serve on the non-permanent seat of the UN Security Council from 2008 to 2009. Adversely impacted by the 2008 financial crisis, austerity measures led to widespread anti-government protests in 2009 and 2011. In the latter year, parliament was dissolved in May, with Croatian president Ivo Josipović calling for new elections to quell the protests by December. After successfully completing negotiations from 2004 to 2013, Croatia joined the European Union (EU) as its 28th member in July 2013.
Croatia was affected by the 2015 European migrant crisis when Hungary's closure of borders with Serbia pushed over 700,000 refugees and migrants through Croatia. On 19 October 2016, Andrej Plenković began serving as the current Croatian Prime Minister. The most recent presidential elections, held on 12 January 2025, elected Zoran Milanović as president. In 2022, Croatia began the process to join the OECD, due to complete membership proceedings by 2026. The nation joined the Eurozone and Schengen Area in 2023, adopting the euro as its official currency.
Geography
Croatia is situated in Central and Southeast Europe, on the coast of the Adriatic Sea. Hungary is to the northeast, Serbia to the east, Bosnia and Herzegovina and Montenegro to the southeast and Slovenia to the northwest. It lies mostly between latitudes 42° and 47° N and longitudes 13° and 20° E. Part of the territory in the extreme south surrounding Dubrovnik is a practical exclave connected to the rest of the mainland by territorial waters, but separated on land by a short coastline strip belonging to Bosnia and Herzegovina around Neum. The Pelješac Bridge connects the exclave with mainland Croatia.
The territory covers 56,594 square kilometres (21,851 square miles), consisting of 56,414 square kilometres (21,782 square miles) of land and 128 square kilometres (49 square miles) of water. It is the world's 127th largest country. Elevation ranges from the mountains of the Dinaric Alps with the highest point of the Dinara peak at 1,831 metres (6,007 feet) near the border with Bosnia and Herzegovina in the south to the shore of the Adriatic Sea which makes up its entire southwest border. Insular Croatia consists of over a thousand islands and islets varying in size, 48 of which are permanently inhabited. The largest islands are Cres and Krk, each of them having an area of around 405 square kilometres (156 square miles). It is the largest overseas territory on the Adriatic Sea.
The hilly northern parts of Hrvatsko Zagorje and the flat plains of Slavonia in the east which is part of the Pannonian Basin are traversed by major rivers such as Danube, Drava, Kupa, and the Sava. The Danube, Europe's second longest river, runs through the city of Vukovar in the extreme east and forms part of the border with Vojvodina. The central and southern regions near the Adriatic coastline and islands consist of low mountains and forested highlands. Natural resources found in quantities significant enough for production include oil, coal, bauxite, low-grade iron ore, calcium, gypsum, natural asphalt, silica, mica, clays, salt, and hydropower. Karst topography makes up about half of Croatia and is especially prominent in the Dinaric Alps. Croatia hosts deep caves, 49 of which are deeper than 250 m (820.21 ft), 14 deeper than 500 m (1,640.42 ft) and three deeper than 1,000 m (3,280.84 ft). The Plitvice lakes are a system of 16 lakes with waterfalls connecting them over dolomite and limestone cascades. The lakes are known for their distinctive colours, ranging from turquoise to mint green, grey or blue.
Climate
Most of Croatia has a moderately warm and rainy continental climate as defined by the Köppen climate classification. Mean monthly temperature ranges between −3 °C (27 °F) in January and 18 °C (64 °F) in July. The coldest parts of the country are Lika and Gorski Kotar featuring a snowy, forested climate at elevations above 1,200 metres (3,900 feet). The warmest areas are at the Adriatic coast and especially in its immediate hinterland characterised by Mediterranean climate, as the sea moderates temperature highs. Consequently, temperature peaks are more pronounced in continental areas.
The lowest temperature of −35.5 °C (−31.9 °F) was recorded on 3 February 1919 in Čakovec, and the highest temperature of 42.8 °C (109.0 °F) was recorded on 4 August 1981 in Ploče. Mean annual precipitation ranges between 600 millimetres (24 inches) and 3,500 millimetres (140 inches) depending on geographic region and climate type. The least precipitation is recorded in the outer islands (Biševo, Lastovo, Svetac, Vis) and the eastern parts of Slavonia. However, in the latter case, rain occurs mostly during the growing season. The maximum precipitation levels are observed in the Dinaric Alps, in the Gorski Kotar peaks of Risnjak and Snježnik.
Prevailing winds in the interior are light to moderate northeast or southwest, and in the coastal area, prevailing winds are determined by local features. Higher wind velocities are more often recorded in cooler months along the coast, generally as the cool northeasterly bura or less frequently as the warm southerly jugo. The sunniest parts are the outer islands, Hvar and Korčula, where more than 2700 hours of sunshine are recorded per year, followed by the middle and southern Adriatic Sea area in general, and northern Adriatic coast, all with more than 2,000 hours of sunshine per year.
Biodiversity
Croatia can be subdivided into ecoregions based on climate and geomorphology. The country is one of the richest in Europe in terms of biodiversity. Croatia has four types of biogeographical regions—the Mediterranean along the coast and in its immediate hinterland, Alpine in most of Lika and Gorski Kotar, Pannonian along Drava and Danube, and Continental in the remaining areas. The most significant are karst habitats which include submerged karst, such as Zrmanja and Krka canyons and tufa barriers, as well as underground habitats. The country contains three ecoregions: Dinaric Mountains mixed forests, Pannonian mixed forests, and Illyrian deciduous forests.
The karst geology harbours approximately 7,000 caves and pits, some of which are the habitat of the only known aquatic cave vertebrate—the olm. Forests are abundant, covering 2,490,000 hectares (6,200,000 acres) or 44% of Croatian land area. Other habitat types include wetlands, grasslands, bogs, fens, scrub habitats, coastal and marine habitats.
In terms of phytogeography, Croatia is a part of the Boreal Kingdom and is a part of Illyrian and Central European provinces of the Circumboreal Region and the Adriatic province of the Mediterranean Region. The World Wide Fund for Nature divides Croatia between three ecoregions—Pannonian mixed forests, Dinaric Mountains mixed forests and Illyrian deciduous forests.
Croatia hosts 37,000 known plant and animal species, but their actual number is estimated to be between 50,000 and 100,000. More than a thousand species are endemic, especially in Velebit and Biokovo mountains, Adriatic islands and karst rivers. Legislation protects 1,131 species. The most serious threat is habitat loss and degradation. A further problem is presented by invasive alien species, especially Caulerpa taxifolia algae.
Invasive algae are regularly monitored and removed to protect benthic habitat. Indigenous cultivated plant strains and domesticated animal breeds are numerous. They include five breeds of horses, five of cattle, eight of sheep, two of pigs, and one poultry. Indigenous breeds include nine that are endangered or critically endangered. Croatia has 444 protected areas, encompassing 9% of the country. Those include eight national parks, two strict reserves, and ten nature parks. The oldest national park in country is Plitvice Lakes National Park, a UNESCO World Heritage Site. Velebit Nature Park is a part of the UNESCO Man and the Biosphere Programme. The strict and special reserves, as well as the national and nature parks, are managed and protected by the central government, while other protected areas are managed by counties. In 2005, the National Ecological Network was set up, as the first step in the preparation of the EU accession and joining of the Natura 2000 network.
Governance
The Republic of Croatia is a unitary constitutional republic using a parliamentary system. Government powers in Croatia are legislative, executive, and judiciary powers. The president is the head of state, directly elected to a five-year term and is limited by the constitution to two terms. In addition to serving as commander-in-chief of the armed forces, the president has the procedural duty of appointing the prime minister with the parliament and has some influence on foreign policy.
The government is headed by the prime minister, who is supported by deputy prime ministers and various ministers in charge of particular sectors. As the executive branch, it is responsible for proposing legislation and a budget, enforcing the laws, and guiding foreign and internal policies. The government is seated at Banski dvori in Zagreb.
Law and judicial system
A unicameral parliament – known as the Sabor – holds legislative power. The number of parliament members can vary from 100 to 160. They are elected by popular vote to serve four-year terms. Legislative sessions take place from 15 January to 15 July, and from 15 September to 15 December annually. The two largest political parties in Croatia are the Croatian Democratic Union (HDZ) and the Social Democratic Party of Croatia (SDP).
Croatia has a civil law legal system in which law arises primarily from written statutes, with judges serving as implementers and not creators of law. Its development was largely influenced by German and Austrian legal systems. Croatian law is divided into two principal areas—private and public law. Before EU accession negotiations were completed, Croatian legislation had been fully harmonised with the community acquis.
The main national courts are the Constitutional Court, which oversees violations of the Constitution, and the Supreme Court, which is the highest court of appeal. A variety of administrative, commercial, county, misdemeanor, and municipal courts handle cases in their respective domains. Cases falling within judicial jurisdiction are in the first instance decided by a single professional judge, while appeals are deliberated in mixed tribunals of professional judges. Lay magistrates also participate in trials. The State's Attorney Office is the judicial body constituted of public prosecutors empowered to instigate prosecution of perpetrators of offences. Law enforcement agencies are organised under the authority of the Ministry of the Interior which consist primarily of the national police force. Croatia's security service is the Security and Intelligence Agency (SOA).
Foreign relations
Croatia has established diplomatic relations with most world nations – 189 states in total – starting with Germany (1991) and most recently with Liberia (2024). It exerts influence as a small power in this region and within European international institutions. Since the 1990s, Croatia has had unresolved border disputes throughout Southeast Europe, namely with Serbia, Bosnia and Herzegovina, Montenegro, and Slovenia. It is a member of the United Nations (UN), the European Union, NATO, the Council of Europe, the Union for the Mediterranean, and the Schengen Area as well as the Eurozone. Modern Croatian foreign policy objectives include enhancing relations with neighbouring countries, developing international cooperation and promotion of the Croatian economy.
It supports 57 embassies, 30 consulates and eight permanent diplomatic missions. Many international organisations have regional offices in Croatia, such as the European Bank for Reconstruction and Development (EBRD), International Organization for Migration (IOM), Organization for Security and Co-operation in Europe (OSCE), World Bank, World Health Organization (WHO), International Criminal Tribunal for the former Yugoslavia (ICTY), United Nations Development Programme (UNDP), United Nations High Commissioner for Refugees (UNHCR), and UNICEF.