After WW1 (1914-1918) Germany was defeated and got their share: most of all by the Treaty of Versailles, which meant in short: France WILL BE the boss of continental Europe...
In the early 1920's Germany got almost bankrupt, hyperinflation, poverty etcetera.
Anyway it's all about the money and (police)BMW's!
And women and beer and football and so on and on...
Cheers
Robin