Which of the following best sums up the reason the Constrution has remained the law of the land for so long?

It actually keeps our country in check imagine all the things happening now without the constitution. This is the law of the land the Writing of the U.S it keeps us safe physically and mentally this is why it stayed around this long.

Explanation:

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.