Written records
Fossilized remains
Man-made objects
All of the above
As a way to communicate with each other
As part of religious rituals
To decorate where they lived
None of the above
Food surpluses
Large amounts of land
Jobs besides farming
None of the above
Were monotheistic
Developed away from river valleys
Were nomadic
All of the above
Merchants
Artisans
Priests and nobles
None of the above