Describe TWO inventions that were developed by River Valley Civilizations?

The Sumerians Developed the wheel, and aquaducts(basically pipes) The aincient chinese developed gunpowder, and movable type print (printing press precursor)

Explanation:

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albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers

living during the great depression had a major affect on the mentality many people. a good portion of people who lived during that time do not trust banks. this is likely the result of the many widespread bank failures in the 30s that caused people to lose their life savings.