These areas were geographically different. The Nile River Valley was very fertile and had been exploited prior to the Greeks by the Egyptians. The Indus River Valley was fertile but was Indian territory. This was quickly given back to the Indians. Ancient China was Chinese and the Greeks did not settle there.
Climate was the third important environmental influence on Greek civilization. Greece has a varied climate with temperatures averaging 48 degrees Fahrenheit in the winter and 80 degrees Fahrenheit in the summer. In ancient times, these moderate temperatures supported an outdoor life for many Greek citizens. Men spent much of their leisure time at outdoor public events. They met often to discuss public issues, exchange news, and take an active part in civic life.
Hope this helps a little. :)
