How was the cash and carry prevent the us from entering war

The purpose of this policy was to maintain neutrality between the United States and European countries while giving aid to Britain by allowing them to buy non war materials. Various policies, such as the Neutrality Acts of 1935, 1936, and 1937, forbade selling implements of war or lending money to belligerent countries under any terms. The U.S. economy was rebounding at this time, following the Great Depression, but there was still a need for industrial manufacturing jobs. The cash and carry program helped to solve this issue and in turn Great Britain benefited from the purchase goods.

Do you mean israel ?