What geographic feature was central to where and how the first civilizations developed?

What was the importance of the open door policy?

What role did mazzini play in italian unification? a.) he dreamed of a united italy and took the first steps to achieving it. b.) he conquered the southern part of italy, including sicily. c.) he was the first leader of a united italy. d.) he was assassinated by the french government, making him a martyr.

What were the social, economic, and political characteristics of spanish and portuguese rule in latin america?