Brabant and Flanders formed Netherlands under Burgundy?

[NiceGuyEddie]

I am playing Holland and Netherlands just appeared below me... Brabant and Flanders where still in the PU with Burgundy and turned into Netherlands, which is still in a union with Burgundy.

Who and what caused this to happen? I'm at a loss and feel like I'm missing a very obvious explanation for this. And I suppose my only course of action is to stamp out wannabe-Netherlands and form it myself when I hit tech 10?

 

[atwix]

Burgundy event that unites lowlands into a PU netherlands. because you are player, it didn't fire for you. I think you got unlucky, it has low chance for ai to happen i think

 

[Battlex]

I am playing Holland and Netherlands just appeared below me... Brabant and Flanders where still in the PU with Burgundy and turned into Netherlands, which is still in a union with Burgundy.

Who and what caused this to happen? I'm at a loss and feel like I'm missing a very obvious explanation for this. And I suppose my only course of action is to stamp out wannabe-Netherlands and form it myself when I hit tech 10?

You could ally someone weak who wants the land like liege, give them the provinces not needed to form Netherlands, form Netherlands, break allaince, wait for truce to expire, then reconquest war.