Brian Dunleavy

Trenches—long, deep ditches dug as protective defenses—are most often associated with World War I, and the results of trench warfare in that conflict were hellish indeed.

While the New Deal did have a lasting impact on the U.S. economy, other significant factors contributed toward ending the Great Depression by June 1938.

Kaczynski, who would later become known as the infamous Unabomber, was subjected to a controversial and disturbing psychological experiment as a young student at the Ivy League school.

The Secret Service accompanies the president and the First Family everywhere, but it wasn’t always this way.

Tank Man, a protester who tried to stop Chinese tanks moving through Tiananmen Square, has never been identified.