1) The Dow Jones Industrial Average (DJIA) is a stock market index that tracks the performance of 30 large, publicly owned companies in the United States.

2) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.

3) The word "chocolate" contains four vowels: O, O, A, and E.

4) The world's first paper money was created in China over 1,000 years ago.