Well there could be problems with food, and if there is a sickness, or a desater, like flooding around you could not move on. Also the population can reduce food, and water.
I'd go for letter D) . But your teacher probably wants to hear letter A) or at least C)
To avoid very warm climates
I’m sorry if I’m incorrect
Answer:
The Failure of Peace Efforts
The Rise of Fascism
Formation of the Axis Coalition
German Aggression in Europe
The Worldwide Great Depression
Mukden Incident and the Invasion of Manchuria (1931)
Japan invades China (1937)
Pearl Harbor and Simultaneous Invasions (early December 1