Opponents of the kansas-nebraska act were primarily upset because it

People were angry about the Kansas-Nebraska Act because it was a de facto repeal of the 1820 Missouri Compromise. In 1820, the abolitionist movement compromised with pro-slavery advocates for the gradual abolition of slavery by containing it to the south.

Explanation:

answer: you could try asking a family member maybe?

b. ensure mutual protection from communism.

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