Answer:
US-British staff conference
Atlantic conference
Tehran conference
Dumbarton Oaks Conference
United Nations Conference on International Organizations
The Potsdam Conference
Step-by-step explanation:
The US-British staff conference set the planning agreement for the US to enter the war.
The Atlantic conference between Churchill, Roosevelt and Stalin achieve the Atlantic Charter, a proposal for Soviet aid conference.
The Tehran conference which involved Churchill, Roosevelt and Stalin tp plan the final strategy for war against Germany and its allies. The operation called Operation Overlord was developed.
Dumbarton Oaks Conference achieved the formation of the United Nations.
United Nations Conference on International Organizations achieved the United Nations Charter.
The Potsdam Conference where the unconditional surrender of Japan was demanded and the Potsdam Agreement on policy for Germany was discussed.