Input (grade 13): Battle of Baghdad (1258) Hulagu Khan's Mongol forces overrun Baghdad, then the leading center of Islamic culture and learning and capital of the Abbasid Caliphate.
Output (grade 9): February 10 - Battle of Baghdad (1258) - Hulagu Khan's Mongol forces overrun Baghdad. The city was the center of Islamic culture and learning and capital of the Abbasid Caliphate.