This society evolved between 4000 and 6000 BC.

The evolution of the Egyptian society marks a significant change in human history.

They were the first people to record their history in the form of a written language.

For the first time the legacy of a society and its' members could be pasted down through time, not as large monolithic remnants, but as a dynamic communication on everyday happenings

What has come to symbolize ancient Egypt to many people is the pyramids. 

Structures of this type are part of several types of structures that were built in various parts of the world around the same time.