Answer:
Both are Located on Water sources
Explanation:
The vast majority of Ancient Indian civilizations are located near a body of water! Mumbai, New Delhi,Kolkata,Chennai are all located near a source of water. This is a great example of how smart people were during Ancient times and how we still do similiar things today. Water is essential for a civilization to thrive, The civilization may need it it for irrigation, Trade,transportation and even some times bathing like the Ancient Egyptians. Hoped this helped !!! ~FEEL FREE TO MARK BRAINLIST~ :D
