1) By the late 1800s, several factors drove the US toward imperialism, including seeking new markets and resources overseas as well as ideas of Anglo-Saxon dominance.
2) The Spanish-American War in 1898 resulted in the US acquiring former Spanish colonies like Cuba, Puerto Rico, Guam, and the Philippines.
3) While the US sought to grant Cuba independence, it encountered resistance when annexing the Philippines, leading to a brutal war that lasted until 1902 as the US solidified its control over its new empire.