Persecution of Muslims
The Philippines is predominantly a Christian society with a complicated history of relations between Islam and Christianity. Despite historic evidence of Islamization spreading throughout the islands in the 13th–16th centuries, the archipelago came under Spanish rule in the 16th century. The Spanish proselytized many natives, and labelled those who remained Muslims as "Moro", a derogatory term recalling the Moors, an Islamic people of North Africa who occupied parts of Spain for several centuries. Today, this term "Moro" is used to refer to the indigenous Muslim tribes and ethnic groups of the country. When the Spanish came to the Philippine islands, most of the natives in Luzon and Visayas were pagans with Muslim minorities, and while Spanish proselytized many natives, many Muslims in Luzon and Visayas were not exempted by the Spaniards from the Spanish Inquisition, wherein Muslims to become Catholics or die for their faith. Those who remained Muslims are only the natives of Mindanao and Sulu which the Spaniards did not invade or had control of only briefly and partially.
Philippine Revolution
On April 21, 1898, after the sinking of in Havana Harbor and prior to its declaration of war on April 25, the United States launched a naval blockade of the Spanish colony island of Cuba, off its southern coast of the peninsula of Florida. This was the first military action of the Spanish–American War of 1898. On May 1, the U.S. Navy's Asiatic Squadron, under Commodore George Dewey, decisively defeated the Spanish Navy in the Battle of Manila Bay, effectively seizing control of Manila. On May 19, Aguinaldo, unofficially allied with the United States, returned to the Philippines and resumed attacks against the Spaniards. By June, the rebels had gained control of nearly all of the Philippines, with the exception of Manila. On June 12, Aguinaldo issued the Philippine Declaration of Independence. Although this signified the end date of the revolution, neither Spain nor the United States recognized Philippine independence.