What was one main argument that justified the south's right to secede from the union? a. national sovereignty overrides state rights b. state sovereignty precedes national sovereignty c. ratification cannot be changed d. national rights are more important than individual rights

the answer is a. national sovereignty overrides state rights. hope this and good luck on your assignment!

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.