3. The Spanish-American War (1898)
The brief but pivotal Spanish-American War signaled America’s entry onto the world stage as a military power. By defeating Spain, the U.S. gained control of Puerto Rico, Guam, and the Philippines, expanding its influence far beyond its borders.
Unlike the old European colonial empires, America’s rise was marked by rapid, strategic acquisitions rather than centuries of conquest. This victory established the United States as a credible player in international affairs and reshaped its global ambitions.
