After World War I, large territorial changes led to the creation of new countries, such as Poland. The Treaty of Versailles played a crucial role in these alterations. Some countries like Switzerland and Spain existed earlier and were influenced by the war's outcomes. ;
The territorial changes after World War I led to the establishment of nations such as Poland, which regained its independence after years of division. The Treaty of Versailles played a significant role in these transformations, while countries like France, Switzerland, and Spain already existed prior to the war. Overall, the aftermath of the war significantly altered the political boundaries in Europe.
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