20 mars 1921 - Silesia Plebiscite

Description:

https://en.wikipedia.org/wiki/Upper_Silesia_plebiscite

Piece of land in dispute between the Weimar German and Polish ethnicities inhabiting it.
Plebiscite (vote), decided in favour of Germany, but certain minority areas got a Polish majority as well.
Decision was given over to League as per Treaty of Versailles, who decided on a border.

Ajouté au bande de temps:

Date: