"The Treaty of Teschen (German: Frieden von Teschen, i.e., "Peace of Teschen"; French: Traité de Teschen) was signed on 13 May 1779 in Teschen, Austrian Silesia, ...
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between the Austrian Habsburg Monarchy and the Kingdom of Prussia, which officially ended the War of the Bavarian Succession." - (en.wikipedia.org 02.04.2021)