1) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

2) The word "bank" comes from the Italian word "banco," which means bench. In medieval Italy, bankers conducted their business on benches in the marketplace.

3) The role of the media in politics is to provide information, analysis, and scrutiny of government actions, policies, and public affairs, serving as a watchdog and facilitating public discourse and transparency.

4) The first successful human heart transplant was performed by Dr. Christiaan Barnard in 1967.