Answer:
The start of WWII. WWI was a very big cause of WWII. WWI led to depressions in Germany, Italy, the Soviet Union, and many more places which in turn caused powerful people to rise in many different countries. These countries in which a person of power rose each had some part in the start of WWII.
B: social
Its B as its mostly deals with money, resources and wealth. Not A because political his nothing to do with money, resources and wealth and is only about how a goverment should run. Not C as its only about Geograthics which only deals with the land including resources. And not Economic as it only covers about money and thats all.
Hope this helps!
A. An effective outline states whether reference sources are credible or biased.
Lincoln freed the slaves by signing the emancipation proclamation.