As in Guinea, the slave trade became the basis of the local economy in Angola. Excursions traveled ever farther inland to procure captives that were sold by African rulers; the primary source of these slaves were those captured as a result of losing a war or inter-ethnic skirmish with other African tribes. More than a million men, women and children were shipped from Angola across the Atlantic. In this region, unlike Guinea, the trade remained largely in Portuguese hands. Nearly all the slaves were destined for the Portuguese colony of Brazil.