1) The world's largest desert is the Sahara Desert in Africa, covering an area of about 3.6 million square miles (9.4 million square kilometers).

2) The New York Stock Exchange (NYSE) is the largest stock exchange in the world.

3) The Dead Sea, located between Jordan and Israel, is the lowest point on Earth's surface. Its saltwater is so dense that people can easily float on its surface.

4) The Berlin Conference in 1884-1885 divided Africa among European powers and set the stage for the colonization of the continent.