Question

Review the map above. Why is the red line between Missouri and the Arkansas Territory significant?

The line started the debate that eventually led to the Civil War.
The line gave Congress much needed control over the politics of the rapidly growing Midwest.
The line was important in completing the Mason-Dixon line between the North and South.
The line established a boundary to keep the slave states and the free states balanced in Congress.

Answer 1

The red line between Missouri and the Arkansas Territory is significant because "the line established a boundary to keep the slave states and the free states balanced in Congress".

Answer: Option D

Explanation:

In 1820 the Missouri Compromise was negotiated in the United States due to opposition over the unification of the new states from the Louisiana purchase between the free northern states and slave southern states of the United States. The conflict was basically on balancing the two states in Congress.

The compromise was contained with following points like: Missouri would become a slave State in the United States, Maine would become a free state, Massachusetts independent, In the future, all states to be founded north of 36° 30' north latitude would become free states, which is the southern border of the state of Missouri .