In the 2nd and 3rd centuries AD, the Huns began to leave the Central Asian steppes. They crossed the Danube in 377 AD and occupied Pannonia, which they used for 75 years as their base for launching looting-raids into Western Europe. However, Attila's death in 453 brought about the disappearance of the Hun tribe. In 568, a Turko-Mongol tribal confederacy, the Avars, conducted its invasion into the Middle Danube region. The Avars occupied the lowlands of the Pannonian Plain and established an empire dominating the Carpathian Basin.