The correct answer is D. a person who causes damage to another should be punished.
The first three never happen in modern countries, at least not officially and legally.
The Tet Offensive is considered the turning point in the war for two reasons: first because it almost decimated south Vietnam and it changed how most Americans viewed the war. So, the Tet Offensive occurred during the Vietnamese New year called Tet. A week-long cease fire occurred so the Vietnamese could celebrate this holiday, but north Vietnam had their fingers crossed behind their back and attacked over 100 south Vietnamese cities simultaneously. This was a major loss for the American side because they couldn't recapture the cities for many months afterward. Back in the United states, Americans were seeing the horrors of war on television and this was kind of the smack in the head for many Americans to wonder why are we here? Why are we in Vietnam? President Lyndon Johnson was blamed for this and his popularity plummeted causing him to announce that he would not be running for a second term as president.
From what I can remember, states' rights was a large factor contributing to the Civil War. With Lincoln becoming president and representing the North, the Southern states seceded, leading to a war. The state governments of the South argued that since the Constitution and the federal government was created by the states, the federal government had no right to stop states from seceding. President Lincoln and other northerners disagreed and wanted to preserve the Union by stopping states from seceding.
After the war, I believe the South still disagreed on a strong federal government. They wanted to rule the area by themselves.