Danzig, 10. Januar 1920, freie Stadt 15. November 1920

The Free City of Danzig (German: Freie Stadt Danzig; Polish: Wolne Miasto Gdańsk) was a semi-autonomous Baltic Sea port and city-state that was created on 10 January 1920, against the wishes of the local population but in accordance with the terms of Part III, Section XI of the Treaty of Versailles of 1919. The Free City included the city of Danzig and over two hundred nearby towns, villages, and settlements, all of which had been a part of the former German Empire. As the League of Nations decreed, the region was to remain separated from the nation of Germany, as well as the newly-resurrected nation of Poland. The Free City was not autonomous; it was under League of Nations "protection" and put into a binding customs union with Poland. Poland also had other, special utilization rights towards the city.

Source: http://en.wikipedia.org/wiki/Free_City_of_Danzig

In 1919 after World War I, the eastern part, which had majority of ethnic Poles, came under Polish rule as the Autonomous Silesian Voivodeship, while the mostly German-speaking western part remained part of the German Reich as the Province of Upper Silesia. From 1919-1921 three Silesian Uprisings occurred among the Polish-speaking populace of Upper Silesia; the Battle of Annaberg occurred within the region in 1921. In the Upper Silesia Plebiscite a vote of 60 to 40 percent voted against joining to Poland, with clear lines dividing Polish and German communities. The exact border, the maintenance of cross-border railway traffic and other necessary co-operations as well as equal rights for all inhabitants in both parts of Upper Silesia were fixed by the German-Polish Accord on East Silesia, signed in Geneva on May 15, 1922. On June 20 Germany de facto ceded the eastern parts of Upper Silesia, becoming part of the Autonomous Silesian Voivodeship of Poland.

Source: http://en.wikipedia.org/wiki/Upper_Silesia

3 Polish cards

The Treaty of Saint Germain of 1919 ruled that, according to the London Pact, the southern part of Tyrol had to be ceded to Italy. Italy's border was pushed northward to the strategically important Alpine water divide, including present day-South Tyrol with its large German-speaking majority. The northern part of Tyrol was retained by the First Austrian Republic.

Source: http://en.wikipedia.org/wiki/History_of_Tyrol