A long time ago, people did not use money. Instead, they traded goods like food, clothes, and animals. This system is called bartering. However, bartering was not always easy because people needed to find someone who wanted their goods. Later, people started using metal coins. Coins were more convenient because they were small and easy to carry. Many years later, paper money was introduced. Today, most people use digital payments like credit cards and online banking. The way we use money keeps changing with new technology.