When did the Germanic tribes invade?

The Germanic tribes began their invasions of the Roman Empire around the late 4th century AD, with significant movements occurring during the Migration Period, which spanned from approximately 375 to 800 AD. Key events include the crossing of the Rhine by the Vandals, Alans, and Suebi in 406 AD, as well as the Visigoths' sack of Rome in 410 AD. These invasions contributed to the decline of Roman power in the West and the eventual fall of the Western Roman Empire in 476 AD.