Why might a decision by the upper house upset the lower house?

I think because if the lower house were to give their opinions on something that the whole room was speaking on and all of the lower house members agreed and most of the upper house members disagreed then that would be a problem for the lower house members. There are more upper house members than lower. So basically that's it.

cherokee and arikara

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.