The Beer Hall Putsch, also known as the Munich Putsch, was a failed coup d'état by Nazi Party (Nationalsozialistische Deutsche Arbeiterpartei or NSDAP) leader Adolf Hitler, Generalquartiermeister Erich Ludendorff and other Kampfbund leaders in Munich, Bavaria, on 8–9 November 1923, during the Weimar Republic.
The answer is B, which represents Italy!
I'm not sure of his name, but it might have been Darius. If you want more info, search 'Gordian Knot'. There was supposedly a prophecy at the time stating that whoever could untie this immensely complicated knot that tied the king's horse yolk to his chariot would rule over Persia. When Alexander saw the knot he sliced it in two with his sword instead of trying to untie it. I'm pretty sure Darius (or whatever his name was)
B. That is the key objective.
The Danube and Rhine rivers.