Answer:
Klaus Fuchs (1911-1988) was a German theoretical physicist and spy who worked at Los Alamos during the Manhattan Project and passed atomic secrets to the Soviet Union.
Explanation:
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It relied largely on the efforts of a middle class
Eugene Debs was the man who once ran for the presidency of the United states while being in prison. The correct option among all the options given in the question is the third option. He was also an American Union leader and the founder of the Industrial workers of the world. He ran for the presidency of the United States 5 times.
All enslaved people were considered property and enslaved people preformed a wide variety of jobs. hope it helped
