Which ancient civilizations were located in Mesopotamia?

Summerian, Assyrian, Akkadian, Babylonian

SUMER is the earliest known civilization in ancient Mesopotamia and may have been the first human civilization anywhere in the world. They called themselves the Sag-giga, the “black-headed ones.” Ancient Sumerians were among the first to use bronze. They pioneered the use of levees and canals for irrigation.

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: