Between 543 and 580 CE, Byzantine missionaries converted the three Nubian kingdoms of Nobatia, Makuria, and Alodia to Christianity. Julian, a Monophysite missionary sent by Empress Theodora, converted Nobatia in 543. Makuria adopted Chalcedonian Christianity around 570 CE through Emperor Justinian's mission. Bishop Longinus converted Alodia to Monophysite Christianity in 580 CE. This conversion introduced new architectural forms, artistic traditions, burial practices, and ecclesiastical organization that influenced Nubian civilization for approximately 700 years.