Where did the missouri compromise imaginary line run

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What was the imaginary line that was part of the compromise of 1820?

The main issue of the Missouri Compromise of 1820 was how to deal with the spread of slavery into western territories. The compromise divided the lands of the Louisiana Purchase into two parts. Slavery would be allowed south of latitude 36 degrees 30'.

What territory did the Missouri Compromise line apply to?

By passing the law, which President James Monroe signed, the U.S. Congress admitted Missouri to the Union as a state that allowed slavery, and Maine as a free state. It also banned slavery from the remaining Louisiana Purchase lands located north of the 36º 30' parallel (the southern border of Missouri).