I believe the answer is C. Who will represent them in the House and Senate.
I think it was in 1964, that was when direct army confrontation happened. This was followed by several more conflicts that made use of heavy fighting naval and aircraft with the Gulf of Tonkin resolution that made military measures necessary. There were an estimated 40, 000 deaths and 20, 000 other casualties.
The election of Hiram Rhodes Revel was significant because he became the first African-American citizen to ever serve in the US Congress. He was first elected in 1870 to represent that state of Mississippi. This election showed that the Reconstruction policies of the Radical republicans were working, as they were providing African-Americans political opportunities.