Answer:
Negative effects of the Mongol Empire's expansion into Western europe, East Asia, include the wiping out of people that resisted given the violent nature of their invasions.
Positive effects include a century of peace those under under Mongol rule. This stability allowed for the reopening of the Silk Road trading routes between China and Europe, increasing cultural exchange and wealth all along the trade paths including Western Africa, East Asia and Europe.
The geography of Egypt had a significant effect on the development of the Egyptian civilisation. The Nile flowed through Egypt and flooded every year. The floods brought fresh deposits of fertile soil which ancient Egyptian farmers used to develop a prosperous agricultural economy. The Egyptian civilisation grew from the farmer's crops and all aspects of society were connected in some way to agriculture and the inundation.<span>
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How long it stands is the independent variable
