Celts Egyptians Greeks Indians
1AD-1500AD 3000BC-1500BC 3000BC-1AD 1500BC-1AD
Indians Egyptians Greeks Sumerians
Egyptians Babylonians Greeks Sumerians
record events Explain natural phenomena To unite people To control natural forces
China India Middle East/N. America Europe
N. America Middle East N. Europe S. America
500BC-500AD 3000BC-1500BC 500BC-1000AD 1500BC-1AD