The famous leader associated with the establishment of the Puerto Rican government in 1952 is Luis Muñoz Marín. As the first elected governor of Puerto Rico and a pivotal political figure, he played a vital role in navigating the transition from U.S. colonial rule to a autonomous commonwealth status. Muñoz Marín advocated for modernization and economic development through programs that promoted education, agriculture, and healthcare. His contributions established a new local government structure and fostered a sense of Puerto Rican identity. Under his leadership, the island experienced significant social and economic changes that laid foundations for its future political landscape and relations with the U.S.