Which part of judicial system best completes the bubble labeled in the diagram

I believe the answer is: the prime authority in the US is the US Supreme Court

This mean that every decision that made in the supreme court would overule the decision that made in the lower court.

To be handled by the supreme court, a case must somehow affect the interpretation of the united states constitution.

Explanation:your welcome

presidency should be the title

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.