Prussia get a little less, which goes to France, so France gives some back to the Netherlands including what would be British Flanders? The Netherlands then only loses majority French areas so they wouldnt feel as screwed over in the 19th than IOTL. Then Britain stays in Hannover and Prussia never manages to unite Germany. France is dominant with having influence over Holland and maybe some other minor Germans.
Kinda complicated but no too difficult to achieve, or is it?
Kinda complicated but no too difficult to achieve, or is it?