Answer:
required warring nations to pay cash for all "non war" goods and carry them on their own ships
Step-by-step explanation:
Neutrality Act of 1937, was passed by the United States Congress to maintain the United States neutrality in the war at the that time. The act entails that, United States of America can only sell foods or generally non-war goods to the warring nations, provided that the buyers pay in cash. It also prohibits using US ships for transportation of such arms.
Hence, the Neutrality Act of 1937 required warring nations to pay cash for all "non war" goods and carry them on their own ships.