This is the story of the results of America's Civil War. Then a world war erupted. The United States had a deep tradition of avoiding foreign wars, but the Spanish-American War had changed things. World War I would shatter it. WAR I, Part 2 - Europe became deadlocked in a bloodletting frenzy.
Soldiers bleed and died to win a stretch of dirt, which was quickly lost again.
Offically neutral America was eventually drawn in. After Hitler invaded Russia, Allied fortunes improved. America, Britain, and Soviet Russia soon divided the postwar world. Korea and Vietnam each had two ideologically opposing sectors, dominated by Communists in the North and the U.S. in the South. As this war developed, intensified, and then ended, one American president was assassinated, another declined to seek re-election, and a third was discredited.