Maguindanao. In 1887, General Emilio Terrero led an expedition against Uto; although, he was able to destroy the kota (forts) in Cotabato, he was unable to enforce Spanish sovereignty (Miravite 1976:42; Ileto 1971:16-29). In 1891, Governor General Valeriano Weyler personally led a campaign against the Maguindanao and Maranao. In the next few months, Weyler erected a fort in Parang-Parang, between Pulangi and the Ilanun coast. This effectively stopped the shipment of arms to Uto, who died a defeated man in 1902. American era During the Philippine–American War, the Americans adopted a policy of noninterference in the Muslim areas, as spelled out in the Bates Agreement of 1899 signed by Brig. General John C. Bates and Sultan Jamalul Kiram II of Jolo. The agreement was a mutual non-aggression pact which obligated the Americans to recognize the authority of the Sultan and other chiefs who, in turn, agreed to fight piracy and crimes against Christians. However, the Muslims did not know that the Treaty of Paris, which had ceded the Philippine archipelago to the Americans, included their land as well. After the Philippine–American War, the Americans established direct rule over the newly formed "Moro Province", which then consisted of five district—Zamboanga, Lanao, Cotabato, Davao, and Sulu. Political, social, and economic changes were introduced. These included the creation of provincial and district institutions; the introduction of the public school system and American-inspired judicial system; the imposition of the cedula; the migration of Christians to Muslim lands encouraged by the colonial government; and the abolition of slavery. Datu Ali of Kudarangan, Cotabato refused to comply with the antislavery legislation, and revolted against the Americans. In October 1905, he and his men were killed. The Department of Mindanao and Sulu replaced the Moro province on 15 December 1913. A "policy of attraction" was introduced, ushering in reforms to encourage Muslim integration into Philippine society. In 1916, after the passage of the Jones Law, which transferred legislative power to a Philippine Senate and House of Representatives, polygamy was made illegal. However, the Muslims were granted time to comply with the new restrictions. "Proxy colonialism" was legalized by the Public Land Act of 1919, invalidating Muslim Pusaka (inherited property) laws. The act also granted the state the right to confer land ownership. It was thought that the Muslims would "learn" from the "more advanced" Christian Filipinos, and would integrate more easily into mainstream Philippine society. In February