The Federal Party () was a short-lived political party in Puerto Rico. The Federal Party was founded on by Luis Muñoz Rivera and other former members of the Autonomist Party during US military rule of the island following the Spanish–American War. The Federal Party supported greater self-rule for the island. The party was regarding as having among its members the former Spanish colonial elite consisting of large sugar plantation owners and hacendados who had enslaved the Black residents of the Island. In , the party was reconstituted as the Union of Puerto Rico, or Union Party. References Further reading José Trías Monge, Puerto Rico: The Trials of the Oldest Colony in the World (Yale University Press, 1997) Defunct political parties in Puerto Rico Political parties established in 1899 1904 disestablishments 1899 establishments in Puerto Rico 1904 in Puerto Rico