The history of the Philippines from 1898 to 1946 covers the period of American rule in the Philippines and began with the outbreak of the Spanish -- American War in April 1898, when the Philippines was still part of the Spanish East Indies, and concluded when the United States formally recognised the independence of the Republic of the Philippines on July 4, 1946.

When did the us let go of the philippines? Okie... think carefully first, then make a decision:
The relevant sentence in the passage is: The history of the Philippines from 1898 to 1946 covers the period of American rule in the Philippines and began with the outbreak of the Spanish -- American War in April 1898, when the Philippines was still part of the Spanish East Indies, and concluded when the United States formally recognised the independence of the Republic of the Philippines on July 4, 1946. So, the answer is July 4 , 1946.