Notes

2. Austria has always had a close realtionship with Germany (not always good i.e. The Austro-Prussian War) However after the unification of Germany brought its states together (including Austria) There soon became a sense of national pride - Austrians felt German. Whereas Czechoslovakia has never had a close relationship with Germany, and in the running up to its annexity, Germany stationed its troops over the border of Czechoslovakia, and despite fierce persuasion from the Brittish government to remove their troops, they remained. As expected this didnt go down well with the Czech's.
3. German-Soviet Nonaggression Pact, also called Nazi-Soviet Nonaggression Pact, German-Soviet Treaty of Nonaggression, Hitler-Stalin Pact, Molotov-Ribbentrop Pact, (August 23, 1939), nonaggression pact between Germany and the Soviet Union that was concluded only a few days before the beginning of World War II.
4. It fell because of the speed and strength of the German attack, combined with the mismanagement of French forces. Also the Germans had years to prepare, while the French army was not as well trained or led. The Germans had tank divisions, unlike the French and much better tanks, the French had not caught onto the idea of tank warfare and spread their tanks out too thinly, the French tanks compared to the German ones were lightly armored and armed, designed for use against infantry and not other tanks. he Germans used Blitzkrieg or lightning warfare and highly mobile mechanized units to punch through the French defenses and overwhelm them. Another factor was the Germans air superiority, the Germans had large numbers of good planes and experienced pilots that had helped General Franco in his takeover of Spain not to much earlier.
5. Germany had no access to the Atlantic Ocean prior to the occupation of Norway.As in WW1,Britain had immediately implemented a naval blockadecof Germany as soon as becoming involved in the war,so controlled both the North Sea and English Channel - the only 2 German routes to the Atlantic before their attack on Norway.
6. Space. No matter how far the Germans advanced, they could never surround or corner the Red Army. Human resources. At no time in the whole war did the Germans really have much grasp of just how large the Red Army was, or of how many more resources Stalin had. Popular support. Stalin managed to make Russians believe in the war- Hitler thought they wouldn't fight for the brutal Stalin. Germany had little control over huge areas behind the front line.