Vargas´period begins: Provisional Government (1930-1934)

Vargas was the head of this Provisional Government. He cancelled the Constitution of 1891 and, until 1934, he governed with decrees. He created ministries of Industry, Work, Commerce, Education and Health, in order to update the State.
In 1932, there was a revolution, called the Constitutional Revolution. The Republican Party Paulista made an alliance with the Democratic Party of Sao Paulo demanding a new constitution and the end of this Provisional Government. This revolution was a success as in 1934 it was approved a new Constitution and Vargas was elected again as the president.

In this article we can see that it was published a secret diary of Vargas, in which he talks about his love adventures, but also about politic issues and international meetings: https://elpais.com/diario/1996/01/05/cultura/820796402_850215.html

This article explains the revolution of 1932, which would finish with the Constitution of 1934: https://www.lavanguardia.com/historiayvida/gertulio-vargas-la-ultima-guerra-civil-brasilena_11734_102.html