where does the central bank get its money
Money creation (also known as credit creation) is the process by which the money supply of a country or a monetary region (such as the Eurozone) is added to. A central bank may introduce new money into the economy (termed "expansionary monetary policy") by purchasing financial assets or lending money to financial institutions. However, in most countries today, most of the money supply is in the form of bank deposits, which is created by private banks in a fractional reserve banking system. Bank lending increases the amount of broad money beyond the amount of base money originally created by the central bank. Reserve requirements, capital adequacy ratios, and other policies are used by the central bank to limit this process.