What people were taken and sold as slaves?

Throughout history, various groups of people have been taken and sold as slaves, including those captured in warfare, victims of piracy, and individuals from marginalized communities. The transatlantic slave trade notably involved the forced transportation of millions of Africans to the Americas, where they were sold into slavery. Additionally, indigenous populations in various regions were often enslaved by colonizers. Slavery has also affected people in different contexts, such as indentured servants and laborers in contemporary human trafficking.