How did the Spanish-American War change the United States?

The Spanish-American War, 1898 ... U. S. victory in the war produced a peace treaty that compelled the Spanish to relinquish claims on Cuba, and to cede sovereignty over Guam, Puerto Rico, and the Philippines to the United States. The United States also annexed the independent state of Hawaii during the conflict.

The Spanish-American War impacted American society in several ways. One impact was that many Americans believed that the concept of Manifest Destiny should be spread around the world. The American people wanted the United States to become a world power. Americans believed that their way of living and governing was superior to that of others.