I'm not an expert but I think it's Mesopotamia. If i'm wrong sorry! :)
It is important to know there are good and bad bacteria because we can assume that all bacteria is either bad or good, this way know there are both could help us understand in the future what to look out for.
A government is based on a social contract. The people give up some of their natural rights and in return the government guarantees them something. A social contract is an agreement between an authority and the people in which they come to terms on an agreement. Our government like most is based on this kind of agreement.
The canals good could could now be shipped directly. Rivers provided faster chapter and more efficient.
Answer:
they didnt have the neccesary stuff
Explanation: