Russia last czar of Russia was czar nicholas II. he was overthrown is 1917 in what is called the Russian revolution.
Blitzkrieg was so fast that the enemy didn't have time to prepare, whereas in WW1 where they fought in trenches, they would have to cross no-mans land and the enemy could see them coming
Sin(64)=0.899=cosx
cos-1(0.899)=x
x=25.973°
