The correct answer to this open question is the following.
Although there are no options attached we can say the following.
How the Korean, Vietnam, and Iraq wars unfolded during the Cold War, and which are the fundamental ideas to understand the historical process of each of these wars.
These wars unfolded as part of the rivalry between the United States and the Soviet Union. The Soviet Union wanted to spread Communism all over the world. The United States feared so much and decided to start the foreign policy of containment, trying to stop the spread of Communism. This started a fierce rivalry because both countries competed in the arms race, the space race, among other things.
The Korean War, Cuban Missile Crisis, the Vietnam War, and the Watergate scandal were all key events that took place during the Cold War era.
