3. the dred scott decision

a freed thousands of slaves.

b required the northern states to follow the fugitive slave law.

c imposed abolition on the southern states.

d forbid the federal government from regulating slavery in the territories.

A freed thousands of slaves.

Explanation:

The Dred Scott decision was to freed thousands of slaves.The decision was to freed the slaves in any form.

He was the enslaved American African man.His color was black that is why he  and his peer was unable to get proper justice in the United state .During 1857 he took a important decision regarding slavery in United states.

B. required the northern states to follow the Fugitive Slave Law.

Explanation:

Dred Scott v. Sanford was a landmark decision of the Supreme Court which established that black people were not considered Americans citizens, whether they were free or enslaved. This meant that they could not ask for any of the protections of the law, such as suing in a court of law. This decision came because Dred Scott, an enslaved black man, argued he should have been free after living in a free state. By stating that a slave in a free state was still considered a slave, the law implicitly required northern states to follow the Fugitive Slave Law.

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