On August 31, 1935, Congress passed<span> the first </span>Neutrality Act<span> prohibiting the export of “arms, ammunition, and implements of war” from the United States to foreign nations at war and requiring arms manufacturers in the United States to apply for an export license.</span>
Answer:

If muscles perform the role of the lungs in the respiratory system then the <u>muscular system</u> helps the respiratory system.
I believe that the best answer would be the last one
Russia was especially worried about Japan's victory.