Baghdad Falls: Mongols End Abbasid Caliphate

Hulagu Khan’s Mongol army breached the walls of Baghdad on February 10, 1258, beginning a week of slaughter that destroyed the Abbasid Caliphate and ended five centuries of Islamic cultural supremacy. Contemporary historians estimated the death toll between 200,000 and over a million, though modern scholars consider the higher figures exaggerated. The Tigris River reportedly ran black with ink from the libraries and red with blood from the inhabitants. Baghdad, which had been the intellectual capital of the world, would not recover for centuries. The Mongol advance on Baghdad was methodical and massive. Hulagu, a grandson of Genghis Khan, had been dispatched by his brother, the Great Khan Mongke, with orders to destroy the Abbasid Caliphate and extend Mongol rule to Egypt. He assembled an army estimated between 150,000 and 300,000 soldiers, including Mongol cavalry, Chinese siege engineers, Christian Georgian and Armenian contingents, and Persian auxiliaries. The force represented the most diverse military coalition of the medieval world. Caliph al-Musta’sim, the thirty-seventh and last Abbasid caliph, fatally miscalculated. He refused Hulagu’s demand to surrender and dismantle his fortifications, reportedly telling the Mongol commander that the entire Islamic world would rise to defend the caliphate. It did not. The caliph had neglected his military, alienated potential allies, and failed to maintain Baghdad’s defenses. When the Mongol siege began on January 29, the city’s walls crumbled within days under bombardment from Chinese-designed catapults and gunpowder weapons. The sack of Baghdad destroyed the House of Wisdom, the legendary center of learning that had preserved and translated Greek, Persian, and Indian texts during Europe’s Dark Ages. Libraries containing irreplaceable manuscripts on mathematics, astronomy, medicine, and philosophy were dumped into the river. The Mongols executed the caliph by rolling him in a carpet and trampling him with horses, fulfilling a Mongol taboo against spilling royal blood on the ground. The fall of Baghdad marked the end of the Islamic Golden Age and shifted the center of Islamic power permanently from Mesopotamia to Cairo and later Istanbul.