Answer:
Soviet-German Non-Aggression Pact
Explanation:
Lend-Lease was in the US and didn’t apply to either Nazi Germany or the USSRA
Battle of Okinawa was a battle in the Pacific between the US and Japan
I honestly have never heard of the Cash and Carry policy, yet I think it would be if you were doing something dangerous or illegal have cash and carry a gun to be OK
Leaves only the Non-aggression pact, which is correct