A continuous artistic tradition extended from the very early Indus valley civilization (3000-1750 BCE) through the early medieval period. The earliest urban civilization, found in the Indus Valley, was nurtured by the Indus River and was made possible by advances such as growing wheat, barley, rice, the use of copper and bronze and trade with Mesopotamia. Two important sites was Harappa and Mohenjo-daro (flourished approximately 3000-1750 BCE). This civilization is renowned for its urban planning and extensive bathing and drainage arrangements. Steatite seals, sculptures and pottery were some of the artifacts discovered in the site.