Venice, but after a change in government there he was exiled to Hungary. Following the death of Ivan Vladislav in 1018, Bulgaria fell under Byzantine rule, and Krešimir III and Gojslav, the two Croatian kings, became Byzantine vassals. Footnotes Wars involving Bulgaria Wars involving the First Bulgarian Empire Wars involving the Second Bulgarian Empire Wars involving medieval Croatia 9th-century conflicts 10th-century conflicts 9th century in Bulgaria 10th century in Bulgaria 9th century in Croatia wars Bulgarian wars