On what date did the U.S. Senate ratify the Treaty of Paris?

The U.S. Senate ratified the Treaty of Paris on February 6, 1899.

The treaty ended the Spanish-American War and reshaped Spain's remaining colonial empire. Signed in Paris on December 10, 1898, it required Spain to relinquish sovereignty over Cuba, cede Puerto Rico and Guam to the United States, and transfer the Philippines to American control in exchange for $20 million.

The Senate debate was contentious because ratification effectively made the United States an imperial power. The vote passed narrowly, 57 to 27—just above the required two-thirds majority. Opposition centered especially on the Philippines and whether acquiring overseas territory conflicted with American republican ideals.

A common mix-up is April 11, 1899. That was the date the ratifications were exchanged and the treaty was proclaimed, not the date the Senate approved it. Spain ratified the agreement on March 19, 1899.