History In 1993, Puerto Rico celebrated the 500th anniversary of its discovery by Colombus. Settled by explorer Juan Ponce de Leon, the Island was a Spanish possession for over four centuries. Puerto Rico came under United States sovereignty by thr Treaty of Paris signed on December 10, 1898, terminating the Spanish-American War. Puerto Ricans have been US citizens since 1917. In July 1950, the US Congress enacted Public Law 600. It provided that existing laws which defined the political, economic, and fiscal realtionship between Puerto Rico and the United States should remain in full force. It also authorized Puerto Rico to draft and approve its own Constitution, which took effect on July 25, 1952. Puerto Rico’s relationship with the US is referred to as commonwealth status.
