Money was created to solve problems in barter economies, where trading goods directly is slow and inefficient. Without money, people must find someone who wants exactly what they offer and has exactly what they need in return. Introducing a commonly accepted medium of exchange breaks this limitation, allowing goods and services to be traded more easily. Money also serves as a unit of account, enabling prices, wages, and debts to be measured consistently across a community. Additionally, it acts as a store of value, letting people save surplus resources for future use. Together, these roles support complex economies and specialization.