For my economy, trade and commerce played an important role for my empire. The major products they had were crops,minerals,glass,ivory, and copper. The geography affected trade by making it easier to travel and communicate better with other empires. The economy was not based on a division of social classes. it was based on the division of provinces. They were wealthy because trade became easier and others worked well and communicated well.
In this pic: old time copper that they traded
Mauryan Empire money ~>