The Barbarian Invasions refer to a series of migrations and attacks by various groups, known as barbarians, on the Roman Empire from the 3rd to the 5th centuries AD. These groups included the Visigoths, Ostrogoths, Vandals, and Huns, who sought new lands and resources. Their movements contributed to the weakening of the Roman state and its eventual fall. The invasions were marked by significant battles and the sacking of major cities, including the capture of Rome in 410 AD by the Visigoths. This period highlighted the challenges faced by the Roman Empire, leading to the establishment of new kingdoms in Europe and the transformation of the continent's political landscape.