The correct answers to this open question are C) the literacy test requirement which prevented many blacks from voting and D) blacks taking control of Southern politics on the state and local levels.
Southern states did not accept well the idea of abolition. Despite slavery had been abolished, President Lincoln gave the southerners leeway to do their Reconstruction process according to their necessities. So Southern states created the Jim Crow laws that were a series of legislations that approved racial segregation. These pieces of legislation started after the passing of the 13th Amendment to the US Constitution that freed millions of African Americans that were slaves. The Black Codes limited the liberty of black people in the Southern states.
I would say the Hittites and the Celts. The Hittites thrived and disbanded before the beginnings of the Roman empire. The Celts were absorbed by the Romans but were keen to follow their ways.
