What inference can you make from study the map about Mauryan dynasty and what were the result of these interactions?

Question: What inference can you make from studying the map about Mauryan dynasty and what were the result of these interactions?

Inference
I can infer that that the towns were close together for easy travel along the silk route and they were close to rivers as a constant source of water.

Result
The result of the interaction between the mesopotamians and the Indus people made the Indus people borrow the idea of using seals to mark their goods. This is because the seals among them were similar