From the 16th century, Swedish was the main language of jurisdiction, administration and higher education in Finland (which was then a part of Sweden), but the majority of the population in the Finnish inland spoke Finnish outside of these sectors of society, i.e. in normal, daily life. In 1809, when Finland was conquered by the Russian Empire and became an autonomous Grand Duchy, Swedish remained the only official language. In 1863, both Finnish and Swedish became official languages with equal status, and by the time of Finland's independence in 1917, after a Finnicization campaign by the Fennoman movement, Finnish clearly dominated in government and society. See further: Finland's language strife.