(D)The development of stone tools, because the neolithic age has to do with the development of human tools.
To protect the lines of supply between New Orleans and Texas
Letter C is correct.
In fact, The Ku Klux Klan was a secret white supremacist group in the U.S which main purpose was to promote violence against jews, black people, and other minorities. By using terrorist methods, these Klans intimidated black voters and Republicans and prevented them from voting and participating in politics. However, in <u>Reconstruction Era</u>, the red shirts had a strong desire to overthrow the reconstruction government and were the ones who used force to terrorize and intimidate freedman and prevent them from voting.