>>18106906
>they were Allied puppet regimes anyway)
They weren’t

>>18106910
They are today and were then.
The only reason the Dutch were neutral was because the Gauls got their teeth kicked into all the way to Paris. If the French touched the Rhine as according to plan, they would've joined in and allowed British Troops as well.

>>18106927
If that is the case, why didn't they extradite Kaiser Wilhelm?

>>18106963
They are mad they didn't get Kleve, Benthem and Frisia

>>18106906
>why did reality contradict my fantasies

>>18106906
America, lol. Get fucked Euros.

Belgium did enter a formal alliance with France after ww1, but the Belgians later suspected that France had the intentions of turning Belgium into a battleground with Germany so Belgium left the alliance right before the outbreak of ww2. Ironically the entire French defensive plan was to fight inside Belgium so the maginot line stopped at the Belgian border which also created a gap in the Ardenne. The French refused to change their strategy and instead modified it so French divisions would rush in and take up their "original" positions inside Belgium. This chaotic improvised maneuver also contributed to the lack of attention towards the Ardenne.
Basically, German success in Case Yellow was greatly enabled because of this massive fuckaround.

As for why France didn't annex everything west of the Rhine, this was unironically exactly what the French demanded during Versailles negotiations but Britain and USA said no, because Britain did not want to give France too much advantage or weaken Germany(preserve balance of power), and USA wanted to adhere to self-determination as much as possible to avoid future conflict.
France protested because she argued that France controlling the Rhine was the only real security guarantee against a future potential German aggression.
Britain managed to negotiate a deal with France to write a formal everlasting alliance with France into the Versailles treaty in exchange of France dropping her Rhine demand. France agreed, then around 1921 Britain decided to void the alliance, which caused France to chimp out and desperately look for new allies, including the USSR and Poland etc, which Hitler then successfully used as an argument by claiming encirclement.
Like clockwork.

It's actually very interesting to read on the Interwar period because you begin to see how all the stars align for war and German success.

>>18108157
>It's actually very interesting to read on the

perfidious Anglos.

>>18106906
Why didn't they just take Elbe River was their natural border?
It was the Will of God-Emperor Octavian.