Hi, I am assuming that you are asking about why did the Americans invade the Philippines in the year 1898, which lasted until 1902 when they finally successfully placed the country under their control.
What sparked the invasion was due to the United States being at war with Spain -- and at the time we were a colony of Spain. The war between the two nations was one-sided, with the United States winning quite swiftly.
During the Treaty of Paris in 1989, Spain gave up the Philippines and its other colonies to the United States for $20 million - which sparked outrage among Filipino patriots and eventually war which lasted from February 4, 1899, to July 2, 1902.
For further reading: https://brainly.ph/question/694040