Fourth Brazilian Republic
period of Brazilian history from 1946 to 1964
The Fourth Brazilian Republic, also known as the "Populist Republic" or as the "Republic of 46", is the period of Brazilian history between 1946 and 1964. It was marked by political instability and the military's pressure on civilian politicians which ended with the 1964 Brazilian coup d'état and the establishment of the Brazilian military dictatorship.
This period was marked by often tumultuous presidencies of Eurico Gaspar Dutra, Getúlio Vargas, Café Filho, Juscelino Kubitschek, Jânio Quadros and João Goulart. In 1945, president Getúlio Vargas was deposed by a bloodless military coup, but his influence in Brazilian politics remained until the end of the Fourth Republic. During this period, three parties dominated national politics. Two of them were pro-Vargas — the Brazilian Labour Party (Partido Trabalhista Brasileiro, PTB) to the left and the Social Democratic Party (Partido Social Democrático, PSD) in the center — and another anti-Vargas party, the rightist National Democratic Union (União Democrática Nacional, UDN).
End of the Estado Novo, 1945
As the Second World War ended with Brazil participating on the Allied side, then president Getúlio Vargas moved to liberalize his own influenced Estado Novo regime. Vargas decreed an amnesty to political prisoners, including the chief of the Communist Party, Luís Carlos Prestes.
He also introduced an electoral law and allowed political parties to campaign. Three political parties introduced themselves into the national political scene.
This brief starts where responsible research should: with the source description of “Fourth Brazilian Republic” as period of Brazilian history from 1946 to 1964. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as period of Brazilian history from 1946 to 1964. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q210542. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1946, 1964 and 1945.
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This entry incorporates text from “Fourth Brazilian Republic” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.