Federal Republic of Central America

The Federal Republic of Central America, known as the United Provinces of Central America in its first year of creation, was a sovereign state in Central America, which consisted of the territories of the former Captaincy General of Guatemala of New Spain. It existed from September 1821 to 1841, and was a republican democracy.

The coat of arms on the nation's flag from 1823–1824 referred to the federation (in Spanish) as Provincias Unidas del Centro de América ("United Provinces of the Center of America"); however, its 1824 constitution, coat of arms, and flag called it República Federal de Centroamérica / Centro América ("Federal Republic of Central America").

It is also sometimes incorrectly referred to in English as the United States of Central America. The flag was introduced to the area by Commodore Louis-Michel Aury inspired by the Argentine flag. The term United Provinces was also used in Argentina's first title Provincias Unidas del Río de la Plata ("United Provinces of the River Plate"). Commodore Aury established the first independent republic in Old Providence Island (Isla de Providencia) in 1818, off the coast of Nicaragua.

The republic consisted of the present-day states of Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica. (Panama was part of Bolivar's Republica de Colombia in 1821.) In the 1830s, an additional sixth state was added – Los Altos, with its capital in Quetzaltenango – occupying parts of what are now the western highlands of Guatemala and Chiapas state in southern Mexico. Although the new nation was now independent of Spain, it had been annexed by the First Mexican Empire.

The annexation was the focus of disagreement, some seeing the Mexican constitution with its abolition of slavery and establishment of free trade as an improvement over the status quo. During the period of 1838–1840, the federation engaged in civil war by Conservatives fighting against the Liberals. Without a sustained struggle for independence to cement a sense of national identity, the various political factions were unable to overcome their ideological differences and the federation dissolved after a series of bloody conflicts.