What provisions were added by the Neutrality Act of 1937?

The Neutrality Act of 1937 did contain one important concession to Roosevelt: belligerent nations were allowed, at the discretion of the President, to acquire any items except arms from the United States, so long as they immediately paid for such items and carried them on non-American ships

Explanation:

the tallest building in the western hemisphere and the sixth tallest building in the world

d. china

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d is the best choice