Which amendment severely limited Cuban rights?

The Platt Amendment is the correct answer because it was a provision in the 1901 Cuban Constitution that allowed the United States to intervene in Cuban affairs and significantly restricted Cuba's sovereignty. It stipulated that Cuba could not enter into any international treaties without U.S. approval and granted the U.S. the right to establish a naval base at Guantanamo Bay. This amendment was a manifestation of American imperialistic policy in the region, reflecting a desire to control Cuban affairs and maintain U.S. influence in the Caribbean following the Spanish-American War. The Platt Amendment effectively curtailed Cuba's ability to govern itself freely, illustrating the extent of U.S. dominance over the island during that period.