Complex sentence: It became the capital of the short-lived African kingdom of the Germanic Vandals (founded in 429-430), which was wiped out circa 533 by the Byzantines who established the African prefecture and later the Exarchate of Carthage.
Split into simpler sentences: It became the capital of the short-lived African kingdom of the Germanic Vandals (founded in 429-430). This was wiped out circa 533 by the Byzantines empire, who established an African prefecture, and later the Exarchate of Carthage.