Battle of Ain Jalut
In 1250, the Ayyubid Egyptian dynasty was overthrown by slave ("Mamluk") regiments, and a new dynasty - the Mamluks - was born. On September 3, 1260, at the Battle of Ain Jalut held in the Jezreel Valley, the Muslim Egyptian Mamluks under Baibars defeated the Mongols and stopped their advance. His successor Al-Ashraf Khalil completed the victory by sweeping the last of the Crusaders out of Palestine.