Middle ages By aranitas 476 Fall of Rome 527 Explendor of Justinian Empire 622 Beginning of Islam 661 Umayyad Period: 715 to 741 Charles Martel, founder of an empire 750 abassid caliphate 843 Treaty of Verdun They divided the empire into three kingdoms 1040 Western crusaders conquered the Holy Land Period: 1050 to 500 Early middle ages 476 Fall of Rome 622 Begining of Islam s. X Caliphates 1054 Schism of Orthodox and Roman Christianity. 1054 Schism or Split 1204 Fourth Crusade estabilished the Latin Empire Period: 1250 to 1050 Hight Middle Ages 1455 Fall of Constantinople 1492 Discover of America Period: 1492 to 476 Middle Ages Period: 1500 to 1250 Late Middle Ages