Refer to the timeline in "From Barter to Bitcoin." Based on the information in the timeline, farming spreads as people settle in villages. What happens as a result of this? Coins are introduced as a way to pay bills. Trade among people creates a need for currency. Special tools are invented to create currency. Paper money takes the place of metal coins.

As farming spreads and people settle in villages, it leads to a significant increase in trade and specialization. With communities growing, individuals can focus on specific crafts, leading to a surplus of goods and a desire to exchange them with others, thus creating a vibrant marketplace. This shift in lifestyle diminishes the reliance on bartering, making way for the introduction of coins, which streamline transactions and foster economic growth. With the rise of trade, the need for a standardized form of currency becomes essential to facilitate more complex exchanges. The cumbersome process of bartering, where equal value must be established for goods, can be inefficient. As a result, coins emerge as a practical solution that simplifies transactions, ultimately evolving into various forms of currency that we use today, including notes and even digital currencies like Bitcoin!