The Spanish Republic (Spanish: República española), historiographically referred to as the First Spanish Republic (Spanish: Primera República española), was the political regime that existed in Spain from 11 February 1873 to 29 December 1874.
The Republic's founding ensued after the abdication of King Amadeo on 10 February 1873. On the next day a republic was proclaimed by a parliamentary majority made up of radicals, republicans and democrats. The period was beset by tensions between federal republicans and unitarian republicans. The period also saw the end of compulsory conscription, the regulation of child labor and the abolition of slavery in Puerto Rico. The government inherited a state of war, the so-called Third Carlist War, ongoing since 1872, and the Ten Years' War, ongoing since 1868, to which the Cantonal rebellion added up in 1873.