Flocculencio
Donor
Out of interest were there any of Chinese or Indian mega cities that weren't cited on a massive Delta's i.e. Ganges or Pearl River Delta? We know that the incredibly fertile Nile had far more to do with Alexandria and Cairo growing so enormous than secrets the Egyptians had so maybe the same applies in Asia. Just a thought.
None of the major Indian cities was on a delta. Delhi and Pataliputra were on the main courses of the yamuna and ganga respectively and Vijayanagar was on a single river