Ameliorate the Missouri Compromise

Directions: correct the sentece(s) below, in red. There is one colon and two commas.
the missouri compromise had three parts no slavery above the 36-30 line entry of Maine as a free state entry of missouri as a slave state. 

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suggested answer: 
The Missouri Compromise had three parts: no slavery above the 36-30 line, entry of Maine as a free state, and entry of Missouri as a slave state.