Which caused the US Army to take over the atomic research project being conducted at Columbia University in the early 1940s? the first atomic bomb test a letter from Albert Einstein Japan's research into atomic bombs the US entry into World War II

U.S entry into world war II caused the us army to take over the atomic research project being conducted at columbia university in the early 1940s.

i thing that the best option is a.they feared it would cause a second economic collapse.

one of the most negatives aspects of the new deal was that it upset the balanced federal budget and led to a huge deficit for the nation while at the same time failed to end increasing unemployment. roosevelt's program, based on keynesian theories of economics, called for massive government spending to stimulate the economy. as he   failed to do this with large tax increases; large sums of money were borrowed to fund new deal programs. when the economy showed some improvement, roosevelt was concerned about inflation, and ordered cuts in government spending. unfortunately, he did so at a time when the new social security tax had cut people's disposable income. businesses were too afraid of spending, and the economy in 1937 was in worse shape than in 1929. at the end of that year, two million people were unemployed.

we need the map to answer the question