sentences:  In the meantime, the Mongols' relentless march westward had displaced the Khawarizmi Turks, who themselves moved west, eventually allying with the Ayyubid Muslims in Egypt.Along the way, the Turks took Jerusalem from the Christians in 1244.After the subsequent loss at the Battle of La Forbie, Christian kings began to prepare for a new crusade (the Seventh Crusade), declared by Pope Innocent IV in June 1245 at the First Council of Lyon.