The territory present on the present borders of the Kingdom of Portugal has been continuously settled since prehistoric times: occupied by Celts like the Gallaeci and the Lusitanians, integrated into the Roman Republic and later settled by Germanic peoples such as the Suebi and the Visigoths. In 1348 and 1349, like the rest of Europe, Portugal was devastated by the Black Death. In 1373, Portugal made an alliance with England. It was apparently reaffirmed in 1452.