By 376 a new wave of migratory people, the Huns, reached Transylvania, triggering conflict with the Visigothic kingdom. Hoping to find refuge from the Huns, Fritigern (a Visigothic leader) appealed to the Roman emperor Valens in 376 to be allowed to settle with his people on the south bank of the Danube. However, a famine broke out and Rome was unable to supply them with food or land. As a result, the Goths rebelled against the Romans for several years. The Huns fought the Alans, Vandals, and Quadi, forcing them toward the Roman Empire. Pannonia became the centre during the peak of Attila's reign (435–453).