At the end of the Western Roman Empire the Germanic tribal confederations migrated from Central Europe, invaded the Iberian peninsula and established relatively independent realms in its western provinces, including the Suebi, Alans and Vandals. Eventually, the Visigoths would forcibly integrate all remaining independent territories in the peninsula, including the Byzantine province of Spania, into the Visigothic Kingdom, which more or less unified politically, ecclesiastically and legally all the former Roman provinces or successor kingdoms of what was then documented as Hispania.