Shajar al-Durr
Al-Musta'sim was the last Abbasid Caliph in Baghdad and is noted for his opposition to the rise of Shajar al-Durr to the Egyptian throne during the Seventh Crusade. To the east, Mongol forces under Hulagu Khan swept through the Transoxiana and Khorasan. Baghdad was sacked and the caliph deposed soon afterwards. The Mamluk sultans and Syria later appointed a powerless Abbasid Caliph in Cairo.