The Ninth Crusade Begins

The future Edward I of England undertook another expedition against Baibars in 1271, after having accompanied Louis on the Eighth Crusade. Louis died in Tunisia. The Ninth Crusade was deemed a failure and ended the Crusades in the Middle East.

In their later years, faced with the threat of the Egyptian Mamluks, the Crusaders' hopes rested with a Franco-Mongol alliance. The Ilkhanate's Mongols were thought to be sympathetic to Christianity, and the Frankish princes were most effective in gathering their help, engineering their invasions of the Middle East on several occasions.[citation needed] Although the Mongols successfully attacked as far south as Damascus on these campaigns, the ability to effectively coordinate with Crusades from the west was repeatedly frustrated most notably at the Battle of Ain Jalut in 1260. The Mamluks eventually made good their pledge to cleanse the entire Middle East of the Franks. With the fall of Antioch (1268), Tripoli (1289), and Acre (1291), those Christians unable to leave the cities were massacred or enslaved and the last traces of Christian rule in the Levant disappeared.

http://en.wikipedia.org/wiki/Crusades#First_Cru...