Czar Nicholas II and his wife. After Revolution of 1905 he failed to solve Russia's basic political, economic and social problems, this sparked eruptions. March 1917 the first of two revolutions toppled the Romanov dynasty and started more radical changes.
Bloodiest War in American History: Not the Civil War -- World War Two. Although more American died in the Civil War, more Americans were killed in WW2. It's a pedantic technicality perhaps, but the Civil War was America's deadliest war, World War II its bloodiest.
Digital History. The Vietnam War was the longest war in American history and the most unpopular American war of the 20th century. It resulted in nearly 60,000 American deaths and an estimated 2 million Vietnamese deaths. It was the first war to come into American living rooms nightly, and the only conflict that ended in defeat for American arms.