How did the west Africa slave traders obtain the slaves they sold to European s?

West African slave traders primarily obtained slaves through a combination of warfare, raids, and the capture of individuals from rival tribes or communities. Some local leaders engaged in the slave trade as a means of economic gain, trading captives for goods such as firearms, textiles, and alcohol. Additionally, people could become enslaved as a result of debt or punishment for crimes. This system was facilitated by complex social and political structures within the region, allowing for a steady supply of captives to meet European demand.