The First Costa Rican Republic is the name given to the historical period between the proclamation of the Republic of Costa Rica in the 1848 reformed Constitution and the official decree by then President José María Castro Madriz on 31 August 1848 and the Costa Rican Civil War of 1948 which ended with the enactment of the current 1949 Constitution on 7 November 1949 starting the Second Costa Rican Republic.