March 1, 1781 it was agreed and ratified
Over time, as the supply of enslaved Africans increased and their prices decreased, farmers and planters agreed that they preferred a slave for life to a servant who had the hope of freedom.
Cottonocracy (which happened to be planters most of the time), yeomens, and poor whites were the three groups that comprised white southern society.
Story time! Ok here is the reason. It was hurting America rather than its intended targets, Britain and France. In March 1809, Congress repealed the Embargo Act of 1807. Jefferson signed the repeal shortly before he left office. The Embargo Act was replaced by the Non-Intercourse Act, which prohibited trade with only Britain and France.