southwest Asia and norther Africa By welch856@student.pcsstn.net 570 Muhammad is born 700 Arabs and Berber traders travel across the saharah 800 The kingdom of Ghana flourishes 900 Al-razi writes medical text 970 Al-Azhar university a center of learning is founded in cario 1100 The empire of Mali is formed 1300 The Ottoman Empire is founded by Osman 1. 1324 Mansa Musa makes the hajj to Mecca 1453 Ottoman Turks conquer Constiantiople