Catherine II of Russia (Russian: Екатерина Алексеевна Yekaterina Alekseyevna), also known as Catherine the Great (Екатерина II Великая, Yekaterina Velikaya; 2 May [O.S. 21 April] 1729 – 17 November [O.S. 6 November] 1796), was the most renowned and the longest-ruling female leader of Russia, reigning from 1762 until her death in 1796 at the age of 67. Born in Stettin, Pomerania, Prussia as Sophie Friederike Auguste von Anhalt-Zerbst-Dornburg, she came to power following a coup d'état when her husband, Peter III, was assassinated. Russia was revitalised under her reign, growing larger and stronger than ever and becoming recognised as one of the great powers of Europe.

In both her accession to power and in rule of her empire, Catherine often relied on her noble favourites, most notably Grigory Orlov and Grigory Potemkin. Assisted by highly successful generals such as Alexander Suvorov and Pyotr Rumyantsev, and admirals such as Fyodor Ushakov, she governed at a time when the Russian Empire was expanding rapidly by conquest and diplomacy. In the south, the Crimean Khanate was crushed following victories over the Ottoman Empire in the Russo-Turkish wars, and Russia colonised the vast territories of Novorossiya along the coasts of the Black and Azov Seas. In the west, the Polish-Lithuanian Commonwealth, ruled by Catherine's former lover, king Stanisław August Poniatowski, was eventually partitioned, with the Russian Empire gaining the largest share. In the east, Russia started to colonise Alaska, establishing Russian America.

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