The correct answer is C.
In the Roman government, the two consuls (heads of government) were elected by citizens. In today's American society, the President, Vice-President, and all Congress people are elected by the president. This represents how the US used the idea of people voting for who is in charge from the Ancient Romans.
(Also known as the South African War) between the British and the Boers was the first modern ''total'' war. The Boars were Dutch farmers with European ancestry who gradually settled in Africa many years before other Europeans and were considered Africans.
It greatly changed the view of the Vietnam War back in America. People already didn't want U.S boots down on Vietnam, but the My Lai massacre made the U.S People really change views and turn on the war. This also affected the government, which then affected how the U.S commanders dictated the war.
Judicial review which is linked to the supremacy clause