They did not get along that we'll so they had half of the land they wanted
The abolitionist movement was very powerful in the North, since the North did not rely heavily on a slave population and because slavery had long-since been depleted in the region.
Slave traders violently captured Africans and loaded them onto slave ships, where for months these individuals endured the “Middle Passage”—the crossing of the Atlantic from Africa to the North American colonies or West Indies. Many Africans did not survive the journey.