The Great Compromise was a measure decided during the United States Constitutional Convention in 1787. The Great Compromise resolved a dispute between small population states and large population states:
The Great Compromise (also known as the Connecticut Compromise) created a bicameral (two-chamber) legislature, with different rules for representation in each chamber. Representation in the House of Representatives would be based on population. In the Senate, all states would have the same amount of representation, by two Senators.