Puerto Ricans become U.S. citizens, are recruited for war effort
Located about 1,000 miles southeast of Florida—and less than half that distance from the coast of South America—Puerto Rico was ceded to the U.S. by Spain in December 1898 as part of the Treaty of Paris, which ended the Spanish-American War. In 1900, a Congressional act created a civil government for the island; the first governor under this act, Charles H. Allen, was appointed by President William McKinley and inaugurated that May in Puerto Rico’s capital city, San Juan.
On March 2, 1917, Wilson signed the Jones-Shafroth Act, under which Puerto Rico became a U.S. territory and Puerto Ricans were granted statutory citizenship, meaning that citizenship was granted by an act of Congress and not by the Constitution (thus it was not guaranteed by the Constitution). The act also created a bill of rights for the territory, separated its government into executive, legislative and judicial branches, and declared Puerto Rico’s official language to be English.
As citizens, Puerto Ricans could now join the U.S. Army, but few chose to do so. After Wilson signed a compulsory military service act two months later, however, 20,000 Puerto Ricans were eventually drafted to serve during World War I. Puerto Rican soldiers were sent to guard the Panama Canal, the important waterway, in operation since 1914, which joined the Atlantic and Pacific Ocean across the Isthmus of Panama in Central America. Puerto Rican infantry regiments were also sent to the Western Front, including the 396th Infantry Regiment of Puerto Rico, created in New York City, whose members earned the nickname Harlem Hell Fighters.
Later, during World War II, Puerto Rico became an important military and naval base for the U.S. Army. Its economy continued to grow, aided by a hydroelectric-power expansion program instituted in the 1940s. In 1951, Puerto Rican voters approved by referendum a new U.S. law granting the islanders the right to draft their own constitution. In March 1952, Luis Munoz Marin, Puerto Rico’s governor, proclaimed Puerto Rico a freely associated U.S. commonwealth under the new constitution; the status was made official that July. Though nationalist agitation for the island’s complete independence from the U.S. was a constant—as were calls for Puerto Rico to become a state—subsequent referendums confirmed the decision to remain a commonwealth.
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