The last half of the twentieth century was a tumultuous time for many Americans. The threat of war and the ongoing social changes occupied many of the concerns that Americans expressed. With this in mind, consider the following major events within the years of 1945-1990: the Cold War, the Civil Rights movement, the Vietnam War, and the Regan Revolution. Discuss and explain the political and social significance of each of these events. How are these events intertwined? Do these events still shape our modern world?