1) The ancient Egyptian civilization, with its impressive pyramids, pharaohs, and hieroglyphics, flourished along the Nile River for thousands of years.

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

3) The word "orange" contains three vowels: O, A, and E.

4) The fastest land animal is the cheetah, capable of reaching speeds up to 70 miles per hour (113 kilometers per hour) in short bursts.