The causes of the Cold War were rooted in the failure of the Allies (U.S., Great Britain, U.S.S.R.) to reach common peace agreements with regard to Germany and Poland at the Yalta and Potsdam Conferences. ... As a result, the Cold War polarization between the U.S. and the Soviet Union lasted for almost 50 years.
Answer: D
Explanation: The United States, South Korea, the Philippines, Australia, Thailand and other anti-communist allies all helped South Vietnam during the Vietnam War. I would choose the U.S. for this question though.
Agricultural communities settled where they did because there was a water source near by for growing crops. It is very hard to grow plants or raise animals without a water source. People also settled near water sources so they could travel on ships and trade with other communities along the same water source. The people in the community also needed water to stay hydrated and to wash dirty clothes or to bathe.