The answer is A) condition are much harsher on Mars than earth.
After reading the first paragraph I can tell you it’s D
Answer:
The demand for laborers in European colonies in the western Hemisphere.
When the rest of the world was focused on Fascism in Japan, Germany, and Italy, the U.S. was focusing on recovery and inward relief in what was called <u>Isolationism</u>.
<h3>What was the U.S. policy after WWI?</h3>
After the conclusion of the first World War, the United States decided to avoid world affairs and focus on itself and its economy.
This was called isolationism and had been practiced by the United States since it was founded.
Find out more on U.S. Isolationism at brainly.com/question/26728783.
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The answer for number one is B and the answer for number 2 is either D or C