The first general issue postage stamps went on sale in New York City, July 1, 1847. One, priced at five cents, depicted Benjamin Franklin. The other, a ten-cent stamp, pictured George Washington.
I believe your answer to this is the Nubian civilization.
It means some of the countries would go beyond their power to become one the richest nations of the world. Some of them would hire people and pay them less. They would also exploit natural resources so that they can produce a large number of products in a day.
Ask google or a tutor will help!!!!!!
Aristotle tutored Alexander the Great before he became Alexander the Great!
