<span>Before the civil war, slavery expanded in the south rather then in the north because, the north was primarily factories and the south was primarily agriculture. Agriculture required more hands on labor than factories. </span>
One of the main ways in which the United States attempted to strengthen its ties and influence with the nations of Latin America was by declaring that further attempts to colonize this area by Europeans would be met with resistance by the US--as embodied in the Monroe Doctrine.
