Would you get up and go to battle for your country? Show your mental toughness here!

Chicago's nickname has nothing to do with the elements. According to USA Today, it doesn't even crack the top 10 windiest cities. Chi-town likely picked up its nickname because of the "long-winded" politicians that rose to power during the 19th century. The moniker's first use is unclear, but it became such a ubiquitous term in newspapers throughout the 1800s that it just stuck.

There are 50 stars on the American flag, standing for the 50 states of the union.

The Battle of Antietam marked the bloodiest single day in American military history.

Missouri is the "Show-Me" state.

The Powhatans, a Native American group that inhabited the Chesapeake Bay region.