06. In The Earliest Cities
Explanation:
Mesopotamia The Indus Valley people had trade relations with Mesopotamia. The trade relationship during the later 3rd millennium was a direct one, ship from Meluhha docked in Mesopotamian ports, some Meluhhans settled in Sumer, and there is a seal belonging to a Mesopotamian whose job it was to act as an interpreter of the Meluhhan language. On the other hand, people from Mesopotamia reached the Indus, so it is clear that the Harappans conducted the trade between two civilizations.