Insular Government of Porto Rico

The Insular Government of Porto Rico (Gobierno Insular de Puerto Rico), known as the Insular Government of Puerto Rico  after May 17, 1932, was an unincorporated and organized territory of the United States that was established when the Foraker Act became effective on April 12, 1900. The Insular Government was preceded by the United States Military Government of Porto Rico and was followed by the Commonwealth of Puerto Rico.

Background
The term "insular" refers to the fact that the government operated under the authority of the Bureau of Insular Affairs. The Philippines also had an insular government at this time. From 1901 to 1922, the U.S. Supreme Court wrestled with the constitutional status of these governments in the Insular Cases.

The Foraker Act was superseded on March 2, 1917, by the Jones–Shafroth Act, which granted U.S. citizenship to anyone born in Puerto Rico on or after April 11, 1899. On July 25, 1952, Puerto Rico became a commonwealth after the ratification of the Constitution of the Commonwealth of Puerto Rico.