Re: So predictable !
"Didn't Hitler & Napoleon have that idea as well."
Not exactly. Adolph wanted his U.S.Yurp to be run from Berlin and to be German. Boney-parts wanted his U.S.E. run by guys (himself, mainly) in Paris and for it to all speak French. The E. U. couldn't agree on where it wanted its "capital" so they had at least two and they couldn't agree on a sensible Yurpeen Common Language so they had dozens.
Meanwhile, our fine Mr. Churchill probably wanted the place run from a gentleman's club in London and for the One True Language to be universally used. Both of which are far more sensible than anything the others suggested or the E. U. implemented.
Even the 'Merkins would agree that English should be the first and official language of all polities.