mar 1, 1921 - Plebiscite to decide future of upper Silesia

Description:

Upper Silesia was disputed by Poland and Germany for a number of reasons including:
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As a result of the Paris Peace Settlement, the boundaries of many countries were redrawn.
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Upper Silesia was on the border of Germany and Poland and both nationalities lived there, which caused conflict.
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It was also an important area for iron and steel production. Both countries wanted to make a claim on this.

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