One of the major problems that emerged as the population of Great Britain increased was that there was not enough land or food for everyone, forcing emigration. <span />
China has the policy that fines couples who have more than 2 children.
In April 1775 British soldiers, called lobsterbacks because of their red coats, and minutemen—the colonists' militia—exchanged gunfire at Lexington and Concord in Massachusetts. Described as "the shot heard round the world," it signaled the start of the American Revolution and led to the creation of a new nation.
It didnt really benefit them. It only benefited the people that sold slaves because they got money. The only other positive thing i can think of is if they took slaves from overpopulated areas?