The 28 May 1926 coup d'état, sometimes called 28 May Revolution or, during the period of the corporatist Estado Novo, the National Revolution, was a military coup of a nationalist origin, that put an end to the unstable Portuguese First Republic and initiated 48 years of corporatist and nationalist rule within Portugal. The regime that immediately resulted from the coup, the Ditadura Nacional, would be later refashioned into the Estado Novo, which in turn lasted until the Carnation Revolution in 1974.