Answer:
From the left Noam Chomsky writes that "the United States is the one country that exists, as far as I know, and ever has, that was founded as an empire explicitly". A national drive for territorial acquisition across the continent was popularized in the 19th century as the ideology of Manifest Destiny.
Explanation:
The United States became an empire in 1945. It is true that in the Spanish-American War, the United States intentionally took control of the Philippines and Cuba. It is also true that it began thinking of itself as an empire, but it really was not. Cuba and the Philippines were the fantasy of empire, and this illusion dissolved during World War I, the subsequent period of isolationism and the Great Depression.