Hi the main leader's of the battle of great Britain are Hugh Dowding Keith,Park Trafford, Mallory Quintin Brand, Richard Sal LIoyd,Breadner.
One was the more advanced weaponry. Prussians had a thing called a needle gun that could fire much faster than the guns that the Austrian forces had. Another is a more advanced type of canon that was made by Krupp, but the canons were not decisive in the victories, even if they were more useful and advanced than the Austrian canons.
It was Lenin who was the leader of the Bolsheviks in 1917 during the November revolution, although Stalin was definitely part of the Revolution. He would later seize power and became a ruthless dictator.
The answer is definitely A, the plague left Great Britain more powerful than any other country because the plague did not spread to there.