A jegybank is a central bank responsible for managing a country's currency, money supply, and interest rates. It plays a crucial role in maintaining economic stability and controlling inflation. By regulating the banking system, the jegybank ensures that financial institutions operate smoothly and can provide services to the public. In addition to monetary policy, the jegybank often oversees the issuance of banknotes and coins. It may also act as a lender of last resort to banks facing liquidity issues. Overall, the jegybank is essential for fostering a stable economic environment and supporting the financial system's integrity.