The settlement and expansion of the Portuguese colonies in South America were made possible by slave labour; however, the historical size of enslaved Native and African groups is largely unknown. This investigation compiles extant statistics on the population of «Brazil» by race and state for the pre-census period from 1545 to 1850, complementing them with headcount estimates based on sugar, gold, and coffee production; pre-contact indigenous populations; and trans-Atlantic slave voyages. The resulting panel of demographic data illustrates national and regional racial transitions encompassing the colonial era. Brazil's population was of Native descent but became predominantly African in the 18th century; people of European ancestry remained a minority for another 200 years.
