Brazilian emperor Pedro II was overthrown in a coup led by Deodoro da Fonseca (pictured), while the country was proclaimed a republic.

Dom Pedro II, nicknamed the Magnanimous, was the second and last monarch of the Empire of Brazil, reigning for over 58 years.

The decline and fall of Pedro II of Brazil took place in the 1880s. It coincided with a period of economic and social stability and progress for the Empire of Brazil, with the nation achieving a prominent place as an emerging power in the international arena.

Manuel Deodoro da Fonseca was a Brazilian politician and military officer who served as the Head of Provisional Government and the first president of Brazil. He was born in Alagoas in a military family, followed a military career, and became a national figure. Fonseca took office as provisional president after heading a military coup that deposed Emperor Pedro II and established the First Brazilian Republic in 1889, disestablishing the Empire. After his election in 1891, he stepped down the same year under great political pressure when he dissolved the National Congress. He died less than a year later.

The First Brazilian Republic, also referred to as the Old Republic, officially the Republic of the United States of Brazil, was the Brazilian state in the period from 1889 to 1930. The Old Republic began with the coup d'état that deposed emperor Pedro II in 1889, and ended with the Revolution of 1930 that installed Getúlio Vargas as a new president. During the First Republic, the country's presidency was dominated by the most powerful states of São Paulo and Minas Gerais. Because of the power of these two states, based on the production of coffee and dairy, respectively, the Old Republic's political system has been described as "milk coffee politics". At local level, the country was dominated by a form of machine politics known as coronelism, in which the political and economic spheres were centered around local bosses, who controlled elections and would often conduct mass electoral fraud.