How did the Missouri Compromise impact western expansion?

It limited expansion by allowing the spread of slavery to most western states.

It helped continue expansion by setting a boundary that determined where slavery would be allowed in western states and territories.

It limited expansion by failing to resolve the issue of slavery in areas beyond Missouri.

It helped continue expansion by allowing individual states beyond Missouri to determine whether or not to allow slavery.

Politicians were forced to deal with the issue of slavery and its westward expansion as early as the Missouri Compromise of 1820. Henry Clay of Kentucky temporarily solved the issue by crafting the Missouri Compromise, bringing Missouri into the Union as a Slave State and, as a balance, Maine entered as a Free State.

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