The treaty that ended the Spanish-American War was the Treaty of Paris, signed on December 10, 1898. This agreement marked a significant turning point in U.S. foreign policy, as it established the United States as an emerging global power. Under the terms of the treaty, Spain relinquished its claims over Cuba, and ceded Puerto Rico, Guam, and the Philippines to the United States for $20 million. The acquisition of these territories expanded U.S. influence in the Caribbean and Asia, leading to debates over imperialism and the responsibilities of the United States as a colonial power. The Treaty of Paris thus reshaped America's role on the world stage.