Pharaohs, cuneiform and barter were most likely found in the age of 3500 BCE to 3000 BCE. Cuneiform was used by the Sumerians in that time period and the rulers of Egypt were also found in that time period as well. As for barter as a form of economy, that can be found in that time period as well and even much earlier, as it predates the use of coins.
Unification, Pyramids, Calendar, and Hieroglyphics
Answer: the rebuilding of the Great Wall
At that time, the Chinese citizens had to face constant threats from the barbarian that resided on the northern part of their territory.The previously built wall was not strong enough and able to be destroyed by the invaders. Ming Dynasty took the credit of rebuilding and strengthening the structure of the great wall.
Answer: https://www.sparknotes.com/us-government-and-politics/american-government/federalism/section4/
Explanation:
