Convocation Sejm of 1764
Open-knowledge reference entry

The Convocation Sejm of 1764 was a confederated convocation sejm of the Polish–Lithuanian Commonwealth which met in Warsaw from 7 May to 23 June. It was tasked with preparing a royal election to fill the throne of the Commonwealth, but also carried out a series of reforms to the Commonwealth.
The Sejm was led by Sejm marshal, Adam Kazimierz Czartoryski. Familia party of Czartoryski magnate family, backed by the Russian Empire (whose military forces were occupying parts of the Commonwealth) forced an election of their candidate (Stanisław August Poniatowski). In protest at the presence of Russian forces, and influence of Russian ambassador to the Commonwealth, Herman Karl von Keyserling, many opposition deputies left the session - in the end the Sejm passed its decisions with only 80 deputies (out of 300) and 7 senators (out of 136). The Sejm approved the cession of the territory of the Commonwealth to Russia, made in the Eternal Peace Treaty of 1686.
Reforms and decisions
Stanisław August Poniatowski was elected the new King of the Poland and Grand Duke of Lithuania, replacing Interrex Władysław Aleksander Łubieński.
The imperial title of the Russian Tsar and the royal title of the King in Prussia were recognized.
Private tariffs were abolished.
A general tariff for public treasury was introduced.
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