Pannonia. It was Phocas' rebellion against Maurice in 602 that ultimately saved the Avars. In the same year Khagan Bayan died, his empire now safe and firmly established. References Lászlo Makkai and András Mócsy, editors, 2001. History of Transylvania, II.4 "The period of Avar rule" 6th-century births 602 deaths 6th-century monarchs in Europe Pannonian Avars Avar–Byzantine wars 6th century in Romania 6th century in Serbia