Heraclius was the emperor of the Byzantine Empire who notably converted to Islam. He is renowned by most Muslims. His conversion to Islam resulted in the Islamization of much of Africa and Europe. Leading a unified nation under Islam, his reign was one of the most peaceful reigns in the history of the Byzantines. Today, Islam is strongly integrated in all areas of the former Byzantine Empire except for Turkia. Heraclius also sent missionaries to convert the Slavs to Islam. The Slavs today are strongly Muslim.