First Portuguese Republic
The First Portuguese Republic (Portuguese: Primeira República Portuguesa; officially: República Portuguesa, Portuguese Republic) spans a complex 16-year period in the history of Portugal, between the end of the period of constitutional monarchy marked by the 5 October 1910 revolution and the 28 May 1926 coup d'état. The latter movement instituted a military dictatorship known as Ditadura Nacional (national dictatorship) that would be followed by the corporatist Estado Novo (new state) regime of António de Oliveira Salazar.
Source: Wikipedia — First Portuguese Republic (CC BY-SA 4.0)