The coffee economy was decisive for the construction of independent Brazil. By the middle of the 19th century, the country was responsible for about half of the coffee global supply; in 1900, that number had increased to about three-quarters of the world’s production. In the Brazilian monarchical period (1822–1889) the center of the activity was located in the valley of the Paraiba do Sul river. Brazilian coffee production from its very beginnings demonstrated an inherent spatial mobility and a great demand for workers. Before 1850, labor supply was guaranteed by the transatlantic slave trade; after that, by an internal slave trade. The two basic characteristics of the coffee economy created during the era of slavery (the intensive exploitation of workers through the extensive exploitation of natural resources) were maintained after the crisis and the abolition of the institution (1888), when the center of the coffee economy moved to the West of São Paulo. Now counting on a new arrangement of free labor (the colonato) and on the subsidized immigration of European peasants, the São Paulo coffee economy in the new republican regime (founded in 1889) underwent a huge productive leap. Overproduction and falling prices became the new problem. The coffee valorization policy adopted by the State of São Paulo after 1906 and then the federal government indicates the reconfiguration of the class relations experienced in the new republican era, which nevertheless kept many of the historical structures of the slave legacy intact.