Arquivo Histórico Ultramarino Arquivo Histórico Ultramarino The Arquivo Histórico Ultramarino (est. 1931) of Portugal preserves archives related to the Portuguese Empire. It is located in the on da Boa-Hora in the city of Lisbon, near the in the parish of Alcântara. The of the governmental Ministry of Science, Technology and Higher Education administers the archives. Prior to 1973, the Overseas Ministry oversaw it. Among its holdings are records created in 15th-20th century related to colonial Angola, Brazil, Cape Verde, Guinea, India, Macau, Mozambique, São Tomé and Príncipe, Timor, Uruguay, and other locales. As of 1970 the materials were grouped as pre-1833 (mostly from
Angola–Brazil relations Jesuit priest Gonçalo João succinctly stated the importance of the economic relationship between Brazil and Angola as "Without Angola, there is no Brazil". Angola was a major source of slaves to Brazil, which was, out of the several European colonies in the Americas, the largest single importer of slaves during the Transatlantic Slave Trade. Two-thirds of those slaves in Brazil originated from the Angola-Congo region. Rio de Janeiro depended on the consistent influx of slaves from Angola to work on sugar cane plantations and for re-exportation to Buenos Aires in exchange for silver. Exports from Brazil to Angola in exchange