As part of the U.S. declaration of war against Spain, the Teller Amendment was incorporated into Congressional legislation recognizing Cuban independence:
That the United States hereby disclaims any disposition or intention to exercise sovereignty, jurisdiction, or control over said Island except for the pacification thereof, and asserts its determination, when that is accomplished, to leave the government and control of the Island to its people.
The Teller Resolution and the Teller Amendment effectively promised Cuban independence once the Spanish were defeated. The Teller Amendment helped bring the Spanish-American War to a close, and Cuba was declared an independent republic in 1902.