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The ethnic Moro population of the southern Philippines resisted both Spanish and United States colonization. The Moro areas of Western Mindanao have been the most rebellious areas in the Philippines along with Samar Island and Bicol Region. The Spaniards were restricted to a handful of coastal garrisons or Forts and they made occasional punitive expeditions into the vast interior regions. After a series of unsuccessful attempts during the centuries of Spanish rule in the Philippines, Spanish forces occupied the abandoned city of Jolo, Sulu, the seat of the Sultan of Sulu, in 1876. The Spaniards and the Sultan of Sulu signed the Spanish Treaty of Peace on July 22, 1878. Control of the Sulu archipelago outside of the Spanish garrisons was handed to the Sultan. The treaty had translation errors: According to the Spanish-language version, Spain had complete sovereignty over the Sulu archipelago, while the Tausug version described a protectorate instead of an outright dependency. Despite the very nominal claim to the Moro territories, Spain ceded them to the United States in the Treaty of Paris which signaled the end of the Spanish–American War.