The simultaneous admission of Missouri and Maine would help maintain peace in the United States by resolving the long-standing dispute over the balance of power between the slave-holding and free states. The Missouri Compromise of 1820 had established a line of demarcation between the two regions, but the admission of Maine as a free state and Missouri as a slave state would create a balance of power between the two regions. This would help to reduce tensions between the two regions and help to maintain peace in the United States.
