The Goths were a Germanic people who played a major role in the fall of the Western Roman Empire and the emergence of medieval Europe. They were first mentioned by Greco-Roman authors in the 3rd century AD, living north of the Lower Danube in what is now Ukraine, Moldova, and Romania. From here, they conducted raids into Roman territory, and large numbers of them joined the Roman military. These early Goths lived in the regions where archaeologists find the Chernyakhov culture, which flourished throughout this region during the 3rd and 4th centuries.