Answer:
Jimmy Carter pressured U.S. Allies to change the way they treated their own people.
Explanation:
It happens from 1941 to 1945
It would be letter B.Presidential actions
"<span>It improves trade between different parts of the world" is the best answer, since the joining of all the nations in the EU has been trade easier for a variety of countries. </span>
Unrestricted submarine warfare (on merchant ships) and the sinking of the RMS Lusitania.