Presidency of Dilma Rousseff
The presidency of Dilma Rousseff began on 1 January 2011 with Dilma Vana Rousseff's inauguration as president after defeating PSDB candidate José Serra in the 2010 elections, and ended with her impeachment on 31 August 2016, already in her second term. The period was historic because it was the first time a woman had held the Presidency of the Republic in Brazil.
Source: Wikipedia — Presidency of Dilma Rousseff (CC BY-SA 4.0)