Why did the barter system come to an end?

The invention of money led to the end of the barter system. It was a system which was used before the invention of the money. You can read about the Monetary System – Types of Monetary System (Commodity, Commodity-Based, Fiat Money) in the given link.

Further readings:

1. Indian Economy Notes for UPSC Civil Service Exam
2. Monetary Policy – Objectives, Role, Instruments