History of the Byzantine Empire By asmith351 330 Constantine dedicates Constantinople 525 Justinian takes the Byzantine throne 532 Construction of the third Hagia Sophia begins Jan 1, 726 Leo III forbids production and worship of icons Jan 1, 1095 First Crusade begins Jan 1, 1204 Fourth Crusade leads to division of Byzantine Empire Jul 25, 1261 Michael Palaiologos recaptures Constantinople Jan 1, 1930 Constantinople is renamed Istanbul Mar 2, 2022 Charlemagne is crowned Holy Roman Emperor Mar 2, 2022 Roman Empire splits after death of Theodosius I
