Which remained independent of the united states?

a. the philippines

b. hawaii

c. puerto rico

d. mexico

Mexico remained independent of the United States

Option D

Explanation:

U.S. had annexed the territories of Philippines and Puerto Rico as a result of the War between U.S. and Spain. Though the war persisted for not more than 6 weeks but this had resulted in immense gain and victory for U.S.

It gained the control over two important oversees possession of Spain namely; Cuba and Philippines. Fearing the Japan’s attempt to acquire the islands of Hawaii then U.S. President McKinley annexed the Hawaii in 1898 by signing a resolution on 7th July 1898.

i would go with the last one