Paul I of Russia which event the Russian Imperial Crown was crafted by court jewellers. The 8-year-old Paul retained his position as crown prince. In 1772, her son and heir, Paul, turned eighteen. Paul and his adviser, Panin, believed he was the rightful tsar of Russia, as the only son of Peter III. His adviser had also taught him that the rule of women endangered good leadership, which was why he was so interested in gaining the throne. Distracting him, Catherine took trouble to find Paul a wife among the minor princesses of the Holy Roman Empire. She chose Princess Wilhelmina of Hesse-Darmstad, who
Russia this conflict Russia annexed East Prussia for a while and even took Berlin. However, upon Elisabeth's death, all these conquests were returned to the Kingdom of Prussia by pro-Prussian Peter III of Russia. Catherine II ("the Great"), who ruled in 1762–96, presided over the Age of Russian Enlightenment. She extended Russian political control over the Polish-Lithuanian Commonwealth and incorporated most of its territories into Russia during the Partitions of Poland, pushing the Russian frontier westward into Central Europe. In the south, after successful Russo-Turkish Wars against Ottoman Turkey, Catherine advanced Russia's boundary to the Black Sea, defeating the Crimean Khanate.