Mason Dixon Line
The Missouri Compromise of 1820 drew an imaginary slave line at 36 degrees 30 minutes north latitude to separate slave and free states. This compromise aimed to maintain a balance between the number of slave states and free states in the United States.
The Mason-Dixon line
Mason Dixon line
The Potomac divided the Confederacy from the Union, although Maryland was a slave-state, and so was DC at the beginning. The Ohio River divided the slave-states from free soil.
The Mason-Dixon Line, located at approximately 39 degrees latitude, became the northern boundary of slavery and its territories in pre-Civil War America. This line separated free states in the North from slave states in the South.
Maryland (slave) and Pennsylvania (free soil)
im pretty sure it was the Missouri compromise.
The Missouri Compromise was Missouri (South) and Maine (North) wanting to come into the United States union, government didn't know if they both should be slave states or free states. An idea proposed by Henry Clay stated that Maine should be a free state, so Missouri should be a slave state. This achieved that any new state that wanted to become apart of the union above the 36'30 latitude are free states, then anything below the latitude are slave states.
The "Border States" were slave states.
slave states
15 slave states and 19 free states during the American Civil War
The Missouri Compromise occurred due to disagreement over whether territories admitted to the Union should be admitted as slave states or free states. Under the terms of the agreement, a line was drawn across all territories that were part of the Louisiana Territory at latitude 36 degrees 30 minutes North, and all territories north of that boundary line with the exception of Missouri were to be free of slavery. In order to balance the number of free and slave states with the admission of Missouri as a slave state, the northern portion of Massachusetts was separated to become the State of Maine.