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Reciprocal Guarantee of Two Nations

1791 · 18th century

The Reciprocal Guarantee of Two Nations was an act adopted by the Great Sejm of the Polish-Lithuanian Commonwealth on 20 October 1791, as an amendment to the Constitution of 3 May. It confirmed the union of Poland and Lithuania as a federation of equal partners and guaranteed Lithuania equal representation in the joint government and treasury. It was overturned with the constitution after 1792.

Reciprocal Guarantee of Two Nations
Image: Stanisław August Poniatowski · Public domain · Wikimedia Commons

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APA
The Epoch Institute. (2026). Reciprocal Guarantee of Two Nations. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/reciprocal-guarantee-of-two-nations
MLA
“Reciprocal Guarantee of Two Nations.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/reciprocal-guarantee-of-two-nations. Accessed .
Chicago
The Epoch Institute. “Reciprocal Guarantee of Two Nations.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/reciprocal-guarantee-of-two-nations.
Harvard
The Epoch Institute (2026) ‘Reciprocal Guarantee of Two Nations’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/reciprocal-guarantee-of-two-nations (Accessed: ).

Last reviewed October 2026Random entry ↻