Name two key pieces of evidence that suggest Hitler was just improvising and seizing opportunities as they arose (didn't have a master plan). Name one historian who supports this view.
a) Munich Agreement, Non-aggression Pact with the Soviet Union - Historian: AJP Taylor

b) Invasion of Poland, Blitzkrieg tactics - Historian: Winston Churchill

c) Remilitarization of the Rhineland, Mein Kampf - Historian: Hugh Trevor-Roper

d) Annexation of Austria, Munich Agreement - Historian: David Irving