The Truman Doctrine, also known as the policy of containment, was A, the informal declaration of the Cold War. The Marshall Plan came latter and was aimed at getting European countries on our (US) side by finical means.
The French navy assisted the US forces in the Battle of Yorktown
The Kellogg-Briand Pact was an agreement to outlaw war.
Answer:
D. To take back the city of Stalingrad from Germany.
Explanation: