Rio Branco (Portuguese for "White River") is the capital city of the Brazilian state of Acre.
Rio Branco or Río Branco may also refer to:
Rio Branco is a municipality in the state of Mato Grosso in the Central-West Region of Brazil.
Coordinates: 15°14′27″S 58°06′57″W / 15.2408°S 58.1158°W / -15.2408; -58.1158
The Law of Free Birth (1871), also known as Rio Branco Law, named after its champion, Prime Minister José Paranhos, Viscount of Rio Branco, was passed by the Brazilian Parliament. It was intended to provide freedom to all newborn children of slaves, and slaves of the state or crown. Slaveholders of the children’s parents were to provide care for the children until the age of 21, or turn them over to the state in return for monetary compensation.
The law was the beginning of an abolition movement in Brazil, but it turned out to be more of a legal loophole than a radical measure. Only a few people were freed under the law, while more than one million people continued to be held as slaves. This law had more of an influence in the northern part of the country, which was leaning toward wage rather than slave labor.
Many of those freed under Rio Branco Law migrated to the north to work for wages on the plantations. The Rio Branco Law was the first step toward abolition of slavery in Brazil. It was ultimately abolished on May 13, 1888 with the adoption of the Lei Áurea.