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.
So I think its a safe bet to say the World Wars sit on top as being the deadliest. World war two is of course the bloodiest. But WWI does not necessarily come behind WWII. First of all, âAchilles beat a thousand men with his left hand!â is not history.