 Various inscriptions also mention the presence of Meluhha traders and interpreters in Mesopotamia.About twenty seals have been found from the Akkadian and Ur III sites, that have connections with Harappa and often use Harappan symbols or writing.The Indus Valley Civilization only flourished in its most developed form between 2400 and 1800 BC, but at the time of these exchanges, it was a much larger entity than the Mesopotamian civilization, covering an area of 1.2 million square meters with thousands of settlements, compared to an area of only about 65.000 square meters for the occupied area of Mesopotamia, while the largest cities were comparable in size at about 30-40.000 inhabitants.