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.
More than 36,000 Americans died in the conflict, making it the fifth deadliest in U.S. history, along with millions of Koreans and at least 150,000 Chinese. Yet it has never gained the same place in the American consciousness as World War II, which preceded it, or the Vietnam War, which followed it.