On April 6, 1917, the United States declared war o...  ...Empire. For Americans, that was the beginning of World War I, even though the war had been going on for...  ...hat set up a dichotomy in how Americans treat the history of that war, reflected in how it's taught in history...

In 1931, John B. Sparks created a "histomap" that...  ...B. Sparks created a "histomap" that distilled the history of civilization into a colorful timeline. See 4,0...  ...ising and falling, and even though it stops after World War I, you can imagine how it would look if it we...  ...ps, quite popular at the tim...