Karl Marx was the author of the Communist Manifesto, the creator of Marxist theory, and one of the most influential thinkers ever.
On Feb. 23, 1945, six Marines raised the U.S. flag over the Japanese island of Iwo Jima. Their photo is one of the most iconic images of World War II.
Fought on a tiny volcanic island 76 years ago, this brutal clash between American and Japanese forces defined the horror of the Pacific theater.
Written over 200 years ago, the Constitution is a legal document of Articles and Amendments that form the foundation of the federal government, state authority and citizen rights.