7th Grade World History By perfectpeaches Period: 250 to 900 The Classical Maya Period 312 Roman Emperor Constantine begins to support Christianity 476 The Fall of Rome 610 Muhammad Receives First Revelation 622 Muslims Flee to Medina 629 Muslims Re-take Mecca 632 Muhammad Dies Period: 632 to 661 The First Four Leaders of the Islamic Empire 800 Kingdom of Ghana 1200 Rise of Mali 1460 Rise of Songhai