Answer:
Secondary because Common Sense is the primary source.
Answer:
It helped them to interact easily through activities such as trade and land buying and selling. This fact led to inter region marriages , suportin ech other i n time of need and foration of basic political bonds thus a change in there sociallives
Answer: People in the Nile River Valley Civilization depended quite a lot on farming. Being close to the Nile River allowed easy access to water that was needed for crops. The seasonal flooding that happened readied the land for the next year's crops. Agriculture was necessary for survival, growth, and economics.