It is always a bit of a cliche that France manages to gain Wallonia somehow during the 19th century. I was wondering, exactly how likely is it? So with a POD after the Belgian revolution*, at what point did France actualy have the oppertunity or the intention to gain Wallonia or all of Belgium? Espiacialy since it could mean the Britain and/or Prussia/Germany could get involved (and would they care enough to get involved?).
* or else everyone is going to say that it could have happened during the Belgian revolution, which is probably