Answer:
United states of America.
Step-by-step explanation:
Spain transferred control of the Philippines to United states of America because the United states of America won the war and has the power to control Philippines till its independence. This is the rule in which that country won the war will be the ruler of that region so that's why control of Philippines transferred from Spain to United states of America. The United States of America granted independence to the Philippines on July 4, 1946 so this is the year in which the United states of America loose this territory.