which caused the us army to take over the atomic research project being conducted at columbia university in…

which caused the us army to take over the atomic research project being conducted at columbia university in the early 1940s?\no the first atomic bomb test\no a letter from albert einstein\no japans research into atomic bombs\no the us entry into world war ii

which caused the us army to take over the atomic research project being conducted at columbia university in the early 1940s?\no the first atomic bomb test\no a letter from albert einstein\no japans research into atomic bombs\no the us entry into world war ii

Answer

Brief Explanations:

In the early 1940s, a letter from Albert Einstein to President Franklin D. Roosevelt alerted the US government to the potential of atomic - powered weapons and the need for the US to start its own research. This led to the US Army taking over the atomic research project at Columbia University as part of the Manhattan Project. The first atomic bomb test happened later. Japan's research into atomic bombs was a concern but not the direct cause. The US entry into World War II was a major event but not the specific trigger for taking over the atomic research project at Columbia.

Answer:

a letter from Albert Einstein