Question

when was the trading relations come into existence
​

Answer 1

Answer:

● Hi.. here is your answer ●

Explanation:

Long-range trade routes first appeared in the 3rd millennium BCE, when Sumerians in Mesopotamia traded with the Harappan civilization of the Indus Valley.

Hope it helps you ✌

Answer 2

Answer:

when was the trading relations come into existence

answer:

3rd millennium BCE.