Here are some fun facts about the United States. The United States was created in 1776 when the Declaration of Independence was signed. The U.S is 4th in land size in the world. The U.S is the 3rd most populated nation. The U.S has the largest economy. The United Stated developed he first nuclear bomb. English is the most spoken language in the United States. Most of the world´s tornadoes are in the Midwest region of the U.S. The U.S sent the first man to the moon. The U.S was the leading force behind the internet. The U.S is the #1 petroleum consumer in the world.