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?\n○ the first atomic bomb test\n○ a letter from albert einstein\n○ japans research into atomic bombs\n○ 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?\n○ the first atomic bomb test\n○ a letter from albert einstein\n○ japans research into atomic bombs\n○ the us entry into world war ii

Answer

Brief Explanations:

In the early 1940s, a letter from Albert Einstein to President Franklin D. Roosevelt in 1939 alerted the US government to the potential of atomic - powered weapons and the need for research. This led to increased government involvement and eventually the US Army taking over the atomic research project at Columbia University as part of the Manhattan Project.

Answer:

a letter from Albert Einstein