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

2) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.

3) Greek mythology includes a wide array of gods and goddesses, such as Zeus, Poseidon, Athena, Aphrodite, and Apollo. These deities were believed to govern various aspects of life and the natural world and were often depicted with human characteristics and engaging in dramatic stories and conflicts.

4) The Triple Crown in horse racing consists of three prestigious races: the Kentucky Derby, the Preakness Stakes, and the Belmont Stakes.