Spanish–Moro conflict
The Spanish initiated the conflict by conquering the Philippines and invading Moro territory in an effort to subjugate the region to their rule since the 1500s. When the Spanish conquered the Muslim Kingdom of Maynila, a vassal of the Sultanate of Brunei, the Islamic rajah, Rajah Sulayman resisted the Spanish. Manila then became the capital of the Spanish Philippines after the conquest, with the Spanish forcibly converting people to Catholicism. The Spanish–Moro Wars started with the Castille War, a war between Spaniards and the Sultanate of Brunei. (The term "Moro" at this time included Muslim Tagalogs who were ruled by the Sultanate of Brunei).
Languages of the Philippines
Spanish was the official language of the country for more than three centuries under Spanish colonial rule, and became the lingua franca of the Philippines in the 19th and early 20th centuries. In 1863, a Spanish decree introduced universal education, creating free public schooling in Spanish. It was also the language of the Philippine Revolution, and the 1899 Malolos Constitution effectively proclaimed it as the official language of the First Philippine Republic. National hero José Rizal wrote most of his works in Spanish. Luciano de la Rosa established that Spanish was spoken by a total of 60% of the population in the early 20th century as a first, second or third language. Following the American occupation of the Philippines and the imposition of English, the use of Spanish declined gradually, especially after the 1940s.