The Cold War was a war over ideology between B) the United States and the Soviet Union. The United States was essentially a capitalist society, while the Soviet Union lived under communist rule. The Cold War was not an armed conflict, but was political and military tension which existed between the two large countries after World War II, but also existed between the Western Bloc (US's allies) and the Eastern Bloc(Soviet Union's allies).
The practice which is not sound in conducting individuales is C) conducting in-person interviews and telephone interviews in the same poll.
In-person interviews deliver the most representative results. Telephone surveys provide a good alternative but they need using a larger sample.
The answers are economic, Political, and natural disasters
