Frederick II of Prussia and Maria Theresa of Austria sign the secret Treaty of Klein Schnellendorf, promising the cession of Lower Silesia to Prussia. However, Prussia breaks the terms of the treaty the following month.
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Citation: Editors, Litencyc. "Frederick II and Maria Theresa sign the secret Treaty of Klein Schnellendorf". The Literary Encyclopedia. First published 01 April 2011 [https://www.litencyc.com/php/stopics.php?rec=true&UID=17456, accessed 09 June 2026.]

