Alexander I (Russian: Александр Павлович, Aleksandr Pavlovich; 23 December [O.S. 12 December] 1777 – 1 December [O.S. 19 November] 1825),. reigned as Emperor of Russia from 23 March 1801 to 1 December 1825. He was the first Russian King of Poland, reigning from 1815 to 1825, as well as the first Russian Grand Duke of Finland and Lithuania.
He was born in Saint Petersburg to Grand Duke Paul Petrovich, later Emperor Paul I and succeeded to the throne after his father was murdered. He ruled Russia during the chaotic period of the Napoleonic Wars. As prince and tsar 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. He promised constitutional reforms and a desperately needed reform of serfdom but made no concrete proposals and nothing happened. In the second half of his reign he was increasingly arbitrary, reactionary and fearful of plots against him; he ended many earlier reforms. He purged schools of foreign teachers, as education became more religiously oriented as well as politically conservative.
In foreign policy, he switched Russia back and forth four times in 1804-1812 from neutral peacemaker to anti-Napoleon to an ally of Napoleon, winding up in 1812 as Napoleon’s enemy. In 1805, he joined Britain in the War of the Third Coalition against Napoleon, but after the massive defeat at the Battle of Austerlitz he switched 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, 1807-12. He and Napoleon could never agree, especially about Poland, and the alliance collapsed by 1810. The tsar's greatest triumph came in 1812 as Napoleon's invasion proved a total disaster for the French. As part of the winning coalition against Napoleon he gained some spoils in Finland and Poland. He formed the Holy Alliance to suppress revolutionary movements in Europe that he saw as immoral threats to legitimate Christian monarchs. He helped Austria's Klemens von Metternich in suppressing all national and liberal movements.
Alexander died without issue and after great confusion that included the failed Decembrist revolt of liberal army officers he was succeeded by his younger brother, Nicholas I.