In 1820, henry clay played a major role in which of the following? a) the missouri compromise
b. louisiana purchase
c. kansas nebraska act
d. the treaty of versillanious

The correct answer to this is A) the Missouri compromise because in 1820 a dispute erupted over the extension of slavery in Missouri Territory. Clay helped settle this dispute by gaining Congressional approval for a plan called the "Missouri Compromise". It brought in Maine as a free state and Missouri as a slave state (thus maintaining the balance in the Senate, which had included 11 free and 11 slave states), and it forbade slavery north of 36° 30' (the northern boundary of Arkansas and the latitude line) except in Missouri.

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