Dilmun, one of most important ancient civilisations of the region and said to date to the thirdmillenniumBC, was a hub on a major trading route between Mesopotamia - the world's oldest civilisation - and the Indus Valley in South Asia.
Moenjodaro, located on the right bank of the Indus River, 510 km north-east of Karachi, in Pakistan's Sindh Province, flourished for about 1000 years during the third and second millenniumBC.