Final answer:
The consequence of the Teheran Conference was the agreement to launch Operation Overlord in early 1944.
Step-by-step explanation:
The consequence of the Teheran Conference of December 1943 was that the three Allied leaders finally agreed that Operation Overlord would be launched in early 1944. Operation Overlord, also known as the D-Day invasion, was the largest amphibious assault in history and marked the beginning of the end for Nazi Germany in World War II. It involved the invasion of Normandy in northern France by the Allied forces under the command of General Dwight D. Eisenhower.
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