Answer:
Harappa used fertile land from the Indus River to farm and trade.
Step-by-step explanation:
The close proximity with the Indus River, provide Harappa with a couple of benefits :
1. It provide source of water that is really important for the growth of crops and animals. On top of that, it made the land surrounding the river became fertile and rich in nutrients. Make it it really easy for various type of crops to grow.
2. It can be used as medium of distribution. People of Harappa can use boats to reach another region using the river. This is how they conducted trades with other civilization.