The Missouri Compromise was declared unconstitutional in the Dred Scott case because it gave rights to African Americans , option A is correct.
What made Missouri compromise unconstitutional?
The Missouri compromise gave rights to the Black people and the court has declared that people with African origins will not be considered as Americans and thus they do not have rights.
The rights given by Missouri compromise to black people was the main reason for declaration of the compromise as unconstitutional.
Therefore, the Missouri Compromise was declared unconstitutional in the Dred Scott case because it gave rights to African Americans , option A is correct.
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