Answer:
- They use the water from the Indus and Ganga River as the center of their civilization
- Their sea provided access that they used for international trades.
Step-by-step explanation:
Based on the remains of their civilization, Anthropologists determined that at the time people in Ancient India were advanced enough to develop some sort of irrigation system. This system was used to distribute the water from Indus and Gaga river to agricultural fields all over the society.
On top of that, Cities in southern India was a very strategic location that many European traders use before they advance to acquire spices in South East Asia. People in ancient India knew this and developed a pretty well known trading harbors in the world.