23 March, 1901
Today in Philippine History:
Aguinaldo was captured by U.S. forces and swore an oath accepting the authority of the United States over the Philippines and pledging his allegiance to the American government. On April 19, he issued a Proclamation of Formal Surrender to the United States, telling his followers to lay down their weapons and give up the fight, effectively ending the First Philippine Republic.
Subsequently, the U.S. continued its annexation of the islands pursuant to the Treaty of Paris. The Philippines was under US sovereignty until 1946, when formal independence was granted by the Treaty of Manila.
(Ref: Wiki Pilipinas)