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

2) The fall of the Berlin Wall in 1989 symbolized the end of the Cold War and the reunification of East and West Germany.

3) The ocean covers about 71% of the Earth's surface and contains roughly 97% of the planet's water.

4) Automated Teller Machines (ATMs) allow individuals to perform banking transactions, such as withdrawing cash, outside of traditional bank branches.