Alexander I (Aleksandr I Pavlovich, ɐljɪkˈsandr ˈpavləvjɪtɕ; – ), nicknamed "the Blessed", was the emperor of Russia from 1801, the first king of Congress Poland from 1815, and the grand duke of Finland from 1809 to his death in 1825. He was the eldest son of Emperor Paul I and Sophie Dorothea of Württemberg.
The son of Grand Duke Paul Petrovich, later Paul I, Alexander succeeded to the throne after his father was murdered. He ruled Russia during the chaotic period of the Napoleonic Wars. As prince and during the early years of his reign, Alexander often used liberal rhetoric, but continued Russia's absolutist policies in practice. In the first years of his reign, he initiated some minor social reforms and (in 1803–04) major liberal educational reforms, such as building more universities. Alexander appointed Mikhail Speransky, the son of a village priest, as one of his closest advisors. The Collegia were abolished and replaced by the State Council, which was created to improve legislation. Plans were also made to set up a parliament and sign a constitution.
In foreign policy, he changed Russia's position towards France four times between 1804 and 1812 among neutrality, opposition, and alliance. In 1805 he joined Britain in the War of the Third Coalition against Napoleon, but after suffering massive defeats at the battles of Austerlitz and Friedland, he switched sides and formed an alliance with Napoleon by the Treaty of Tilsit (1807) and joined Napoleon's Continental System. He fought a small-scale naval war against Britain between 1807 and 1812 as well as a short war against Sweden (1808–09) after Sweden's refusal to join the Continental System. Alexander and Napoleon hardly agreed, especially regarding Poland, and the alliance collapsed by 1810. Alexander's greatest triumph came in 1812 when Napoleon's invasion of Russia proved to be a catastrophic disaster for the French. As part of the winning coalition against Napoleon, he gained territory in Finland and Poland.