Err.. Albion. Before WWII French (for the higher educated people) and German were considered the principal languages in the Dutch curriculum (fewer people learned to speak proper English than German) and the country was culturally and economically and focussed on Germany and our colonies. After WWII we purged our language from the old Germanesque spelling and switched focussing on the Anglophone world instead. After WWII with it's 205.000 to 300.000 Dutch deaths the Dutch had quite enough of the Germans for a while. That only changed after the 1970s. It would be fair to say that when it came to an entire generation of Dutch the Germans quite simply f...cked it: we went from one of the most pro-German nations
* in Europe to perhaps the most anti-German nation in Western Europe for a period of some 30 to 40 years.
*(well think of it: before WWII Dutch-Belgian relations were appalling, Dutch-British relations frankly couldn't be worse (Boer Wars -Dutch have a notoriously long memory) and Franco-Dutch relations were.. well not exactly in a good shape since the French were our traditional enemies)
And beside: "impose" our language on the colonies ? That's why so few Indonesians speak Dutch then. Frankly: we couldn't give a toss about what language they spoke and what god they prayed to as long as they made us money.
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