me Russians colonized Alaska and even founded settlements in California, like Fort Ross.
In 1803–06 the first Russian circumnavigation was made, later followed by other notable Russian sea exploration voyages. In 1820 a Russian expedition discovered the continent of Antarctica.
In alliances with various European countries, Russia fought against Napoleon's France. The French invasion of Russia at the height of Napoleon's power in 1812 failed miserably as the obstinate resistance in combination with the bitterly cold Russian Winter led to a disastrous defeat of invaders, in which more than 95% of the pan-European Grande Armée perished. Led by Mikhail Kutuzov and Barclay de Tolly, the Russian army ousted Napoleon from the country and drove through Europe in the war of the Sixth Coalition, finally entering Paris. Alexander I headed Russia's delegation at the Congress of Vienna that defined the map of post-Napoleonic Europe.
The officers of the Napoleonic Wars brought ideas of liberalism back to Russia with them and attempted to curtail the tsar's powers during the abortive Decembrist revolt of 1825. At the end of the conservative reign of Nicolas I (1825–55) a zenith period of Russia's power and influence in Europe was disrupted by defeat in the Crimean War. Between 1847 and 1851 a massive wave of Asiatic cholera swept over Russia, claiming about one million lives.
Nicholas's successor Alexander II (1855–81) enacted significant changes in the country, including the emancipation reform of 1861. These Great Reforms spurred industrialization and modernized the Russian army, which had successfully liberated Bulgaria from Ottoman rule in 1877–78 Russo-Turkish War.
The late 19th century saw the rise of various socialist movements in Russia. Alexander II was killed in 1881 by revolutionary terrorists, and the reign of his son Alexander III (1881–94) was less liberal but more peaceful. The last Russian Emperor, Nicholas II
