Muñoz spent most of his youth in the United States. In 1910, Marín and his family moved from New York Cityto Washington, D.C., and Muñoz Marín went to Georgetown University.
In 1920, Muñoz returned to Puerto Rico. There he was elected to Puerto Rico'sSenate. He fought hard for the interests of Puerto Rico's poor people. Also, he fought for Puerto Rico's independence from the United States in the 1930s.During World War II, Marín started a program called Operation Bootstrap. This program encouraged Puerto Ricans to help themselves by improving health,education, and farming methods and creating new industry.
In 1949, Luis Muñoz Marín became Puerto Rico's first elected governor. As governor, Marín startedOperation Commonwealth. Its goal was to achieve more self-rule from the United States. In 1952, Puerto Rico succeeded in becoming a commonwealth of the UnitedStates.
The last phase of Marín's great plan was called Operation Serenidad (Serenity). He felt that Puerto Ricans might enjoy life more if they couldenjoy the arts. Operation Serenidad encouraged development and enjoyment of the arts in Puerto Rico.
In 1964, Muñoz Marín decided not to run for a fifthterm as governor of Puerto Rico. Marín continued to contribute to Puerto Rico, however, by returning to his Senate seat. Luis Muñoz Marín died in 1980