Why do we have the system of checks and balances? a. So no one group can take over the government b. So that each person will be treated fairly C. So each group will know what to do in their jobs d. So that there would be a list of rights of citizens guaranteed for them.

A? Not sure exactly

Explanation:

i dont know but i need points

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.