Answer :
Those who were primarily responsible for the Great Compromise were two delegates from Connecticut, Roger Sherman and Oliver Ellsworth. This was because New Jersey, who had a plan drafted by Paterson, had a small-state plan for representation and Virginia, who was a large state had a different plan and they could not agree to a compromise. The Great Compromise, also known as the Connecticut Compromise (because of the delegates who helped to formulate it) was an agreement that all states came to that the lower house would have proportional representation and the upper house would be weighted equally by state.