In what ways were the Indus Valley people an advanced civilization?
Read, read, read ... and take very good notes!
http://www.google.com/search?q=Indus+Valley+people+an+advanced+civilization&oq=Indus+Valley+people+an+advanced+civilization&aqs=chrome..69i57.1699j0j7&sourceid=chrome&espv=210&es_sm=119&ie=UTF-8
