If my memory serves me well, Arabia was very important trading route for Egyptians. They trasported gems, copper and gold through it.
there were many mountains which caused the greeks to have to develop city states the mountains also made it very hard to travel to each city state makig each city very independent
Corn accounted for the size and sophistication of the Native American civilizations in Mexico and South America by molding the Pueblo culture in terms of its technology and development. This includes the development of irrigation systems in order to water their corn fields.
