The main problems of evidence in dealing with early civilizations is that much of the potential evidence itself--such as tools, homes, etc--has vanished due to the fact that it was made of materials such as clay that could not withstand the test of time and weather.
I don't know which came first, but Harappa, Lothal, and Mohenjo-Daro are the major cities from the Harappan civilization.
<span>C. the American Revolution, would be the correct answer.</span>
