Finland was inhabited around 9000 BC after the Last Glacial Period. The Stone Age introduced several different ceramic styles and cultures. The Bronze Age and Iron Age were characterised by extensive contacts with other cultures in Fennoscandia and the Baltic region. From the late 13th century, Finland gradually became an integral part of Sweden as a consequence of the Northern Crusades. In 1809, as a result of the Finnish War, Finland was annexed by Russia as the autonomous Grand Duchy of Finland, during which Finnish art flourished and the idea of independence began to take hold. In 1906, Finland became the first European state to grant universal suffrage, and the first in the world to give all adult citizens the right to run for public office. Nicholas II, the last Tsar of Russia, tried to russify Finland and terminate its political autonomy, but after the 1917 Russian Revolution, Finland declared independence from Russia. In 1918, the fledgling state was divided by the Finnish Civil War. During World War II, Finland fought the Soviet Union in the Winter War and the Continuation War, and Nazi Germany in the Lapland War. After the wars, Finland lost parts of its territory, including the culturally and historically significant town of Vyborg, but maintained its independence.