So with a POD of around 1800, is it possible to have a Netherlands in (lets say) 1900 that consists out of the following territories?
-All of the current Netherlands
Obviously
-All of Flanders
-Brussels
I mention this, as it is technically not part of Flanders
-The northern parts of Wallonia in which a Dutch dialect was still spoken in the early 19th century
- The French Westhoek
Basicly the Dunkirk area of French Flanders
- East Frisia and Jevers
Both were part of the Kingdom of Holland after all
- The County of Lingen
Which had been Dutch until stadholder William III died and Prussia inherited it. According to the Dutch wikipedia they still spoke Dutch until the early 20th century
- The Country of Bentheim and the Emsland up to East Frisia
To create a land bridge towards Lingen and to make the Dutch borders up to of East-Frisia less ridiculous
- The country of Moers
Just like Lingen it used to be Dutch until William III died
- The county of Cleves
They spoke (or even speak?) a Dutch dialect there
-
all of Gelders Overkwartier
Most of it became Dutch in 1815, but some remained Prussian
-
all of de lands of Overmaas
The green, red and purple parts of the map (but not the yellowish parts) Most became Dutch in 1815 (or earlier), but some didn't and some ended up Belgian a couple of decades later
-Some border areas that are need to connect these lands, so we don't have any exclaves or enclaves and so the borders don't look too ridiculous.
- This Netherlands is not allowed to have (more of) Wallonia or Luxemburg
A couple of other things. This Netherlands must be independent (so it can not be part of some German confederation or be a minor country in a personal union or whatever). This Netherlands can't have any (major) seperative movements. Other, neighbouring countries aren't allowed to have major (Alsace-Lorraine-like) claims on the Netherlands. It must be generaly accepted that these are the borders of the Netherlands.
So is it possible to create such a Netherlands and if so, how?