Manuel Deodoro da Fonseca was born on August 5, 1827, in Alagoas da Lagoa do Sul, into a military family. He entered the army in 1843 and soon distinguished himself in the Paraguayan War (1864-1870). After the war, he quickly rose through the ranks, and in 1886 became the military commander of the Rio Grande do Sul province in Emperor Peter. The Republic of Brazil was proclaimed, and Deodoro da Fonseca became the first president. During his presidency, he tried to strengthen the republic and modernize Brazil. He introduced the federal constitution, which divided power between the federal government and the member states. He supported the abolition of slavery, and signed the Golden Rule in 1888, which freed the remaining slaves. His presidency was plagued by many challenges, including economic hardship, political instability, and military mutinies. He resigned on November 23, 1891, after conflict with Congress. August 1892 He died in Rio de Janeiro on the 23rd. He is considered one of the most important figures in the history of Brazil, who played a key role in the overthrow of the monarchy and the establishment of the republic.

Manuel Deodoro da Fonseca was the first president of the Republic of Brazil, who held the office from 1889 to 1891. During his presidency, important changes were made in the Brazilian coinage, which contributed to the consolidation of the republic and economic stability. In 1889, with the end of the monarchy and the proclamation of the republic, a new coinage began. During this period, new Brazilian coins and banknotes appeared, featuring new symbols and coats of arms of the republic. These changes symbolized the rebirth of the republic and the end of the monarchy. In 1890, President Deodoro da Fonseca introduced further financial reforms. These reforms were made as part of the fight against inflation and economic problems. The new coinage policy introduced more stable monetary units that helped stabilize the economy. These changes contributed significantly to the stability of the Brazilian monetary system and the consolidation of the republic. A stable monetary system made it possible to develop the economy and attract investments.