What was a major concern of scientists who left nazi germany for the united states before world war ii? *they did not think germany was paying attention to their work. *they did not think germany wanted to develop nuclear weapons. *they feared germany was trying to develop nuclear weapons. *they feared germany would pass the us in industrial production.

They feared Germany was trying to develop nuclear weapons.

Explanation:

Scientists left Nazi Germany for the United States because they feared Germany was trying to develop nuclear weapons.

The scientists feared that if the nuclear weapon was developed, Nazi could destroy almost half of the world and the lands' vital nutrients could also be affected for hundreds of years and that could also pose danger risk to human existence. Therefore, the scientists flee Germany because they didn’t want the building of the nuclear weapon to be successful.

Scientists and other intellectual left Nazi Germany for the United States, the United Kingdom, and other countries to protect their lives and their families.

Some of the scientists that flee Nazi Germany include Albert Einstein, Hans Bethe, James Franck, Edward Teller, John von Neumann, Leo Szilard, Rudolf Peierls, and Klaus Fuchs.

Although some scientists returned to Germany after the end of the second World War while most of them stayed back in their adopted country.

However, most of the scientists that left for the US contributed brainpower to the War effort of the United States.

Also, the scientists that left Germany at that time were Jews and so they were allowed to work in research fields when they arrived in the United States.

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