sentences:  These adventurers came from a wide spectrum of backgrounds, including plantation owners, traders, and members of the military, as well as people of mixed ancestry and previously captured Indian slaves.In 1629, Antônio Raposo Tavares led a "bandeira", composed of 2,000 allied "índios", "Indians", 900 "mamelucos", "mestizos" and 69 whites, to find precious metals and stones and to capture Indians for slavery.This expedition alone was responsible for the enslavement of over 60,000 indigenous people.