Answer:
Isolation limited contact and prevented a united government.
Explanation:
The greek city states were separated due to the natural barriers so many of them developed they're own separate government.
All of the ancient civilizations were close to a major water source.
All of them practiced agriculture in order to provide enough food for their civilization.
All of them had some sort of irrigaiton in place in order to water down he fields.
All of them lived in socially stratified societies where a ruler was present.
Answer:
The mounds sit on top of burial chambers
Explanation:
I believe it would be <span>A. Air molecules touch the warm ground, Heating them up because conduction is when a source of energy touches something directly.</span>