Westward expansion
The westward expansionist tradition of the country not only brought about territory, but it also spread both the tradition of slavery. Many of the cotton farmers moved west and brought their slaves with them. Historians call this period the Second Middle Passage. Many of the slaves were forcefully removed from their families and communities to work for new farms in the west. This slave exodus marked one of the most significant periods in African slavery. African slaves were subjected to psychological stress due to their forceful exclusion from their families and familiar environments. The westward movement was extremely difficult.