1791
ID: 641
Pope Pius VI condemns Civil Constitution of Clergy with Quod Aliquantum and Charitas
ID: 641
1791
ID: 642
Flight to Varennes - Louis XVI attempts to flee France but is captured and returned
ID: 642
1791
ID: 643
Galvani publishes De Viribus Electricitatis in Motu Musculari on animal electricity
ID: 643
1791
ID: 644
Nicolas Leblanc patents process for producing sodium carbonate - first major chemical industry
ID: 644