Please help according to the passage how did Persian contribute to the allied victory check all that apply

I have done something like this before but I do not know what the passage is so I don't know if it's the same question

by insisting that the AEF operate as an independent force

by leading the AEF to victory in several key battles

by helping the AEF and Allied forces defeat Germany

debating and finalizing the detail of the policy

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska