Description The Moro Rebellion (1899–1913) was an armed conflict between Moro indigenous ethnic groups and the United States military which took place in the southern Philippines but was unconnected to the Spanish–American War in 1898.
The word "Moro" is a term for ethnic Muslims who lived in the Southern Philippines, an area that includes Mindanao Jolo and the neighboring Sulu Archipelago.
After the American government informed the Moros that they would continue the old protectorate relationship that they had with Spain, the Moro Sulu Sultan rejected this and demanded that a new treaty be negotiated. The United States signed the Bates Treaty with the Moro Sulu Sultanate which guaranteed the Sultanate's autonomy in its internal affairs and governance while America dealt with its foreign relations, in order to keep the Moros out of the Philippine–American War. Once the Americans subdued the northern Filipinos, the Bates Treaty with the Moros was violated by the Americans and they invaded Moroland.
After the war in 1915, the Americans imposed the Carpenter Treaty on Sulu.