The Teller Amendment was a resolution passed by the United States Congress in 1898, during the Spanish-American War. It stated that the U.S. would not annex Cuba after the war, emphasizing that the U.S. was fighting for Cuba's independence from Spain. This amendment aimed to reassure both the American public and the international community that the U.S. had no imperialistic intentions. The amendment was introduced by Senator Henry M. Teller of Colorado and was part of the broader debate over U.S. involvement in the war. Ultimately, the Teller Amendment helped shape U.S. foreign policy by promoting the idea of supporting self-determination for nations.