Answer:
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Answer:
Communism
Explanation:
The United States' main concern during the Cold War was communism. The Cold War was not a traditional war. It was "cold" because the U.S. and the Soviet Union did not fight each other directly. ... Leaders of both countries worried that the other would use the atomic bomb to turn the Cold War into a real war.
World War II is generally said to have begun on 1 September 1939, with the invasion of Poland by Germany and subsequent declarations of war on Germany by France and the United Kingdom. ... On 22 June 1941, the European Axis powers launched an invasion of the Soviet Union, opening the largest land theatre of war in history.
The world saw a major increase in population, which, along with an increase in living standards, led to the depletion of natural resources. The use of chemicals and fuel in factories resulted in increased air and water pollution and an increased use of fossil fuels.
These events relate most directly to <span>(1) revised understandings of natural surroundings, since all of them were landmark times in history for discovery. </span>
