In my opinion Aerial photograph
People all over the world were in a state of desperation and poverty due to The Gear Depression starting just a decade prior. This would've lead many people to believe that Adolf Hitler and his fascist regime would help them out of this state of desperation and poverty
The meeting at Yalta is one of the most considerable step towards change that came from ww2. Three leaders, (F.D.R, Josef Stallone, and Winston Churchill) divided up the central powers and distributed the central powers' assets among themselves and there allies. another, more positive change was the United States, through the needs drawn out from the war, dragged itself completely out of the depression. Business was again booming and the United States government received plenty of money from the war effort and the spoils from it. Also, the United States made a world changing statement that she was the world's most powerful nation.
2 years and don’t click the link above my answer
Napoleon Bonaparte was the French ruler