5. Facts of how the United States
became an imperialist in the past and is
still one today.

Explanation:

Overview. In the late nineteenth century, the United States abandoned its century-long commitment to isolationism and became an imperial power. After the Spanish-American War, the United States exercised significant control over Cuba, annexed Hawaii, and claimed Guam, Puerto Rico, and the Philippines as territories.

The desire to extend its system of values around the world was another driving force of American imperialism. ... Many Americans favored to see such landmarks as the "American dream" and "American freedom" embodied in countries with older cultural traditions.