The 56th United States Congress convened from December 7, 1899, to March 4, 1901. It consisted of the Senate and the House of Representatives, with a total of 90 senators and 357 representatives. This Congress was notable for addressing issues such as the aftermath of the Spanish-American War and the expansion of U.S. territories. During this session, significant legislation included the Foraker Act, which established a civilian government in Puerto Rico, and the Platt Amendment, which defined U.S. relations with Cuba. The Congress was dominated by the Republican Party, reflecting the political landscape of the time.