As a result of the abolition of serfdom and the availability of education to the native Estonian-speaking population, an active Estonian nationalist movement developed in the 19th century.[citation needed] It began on a cultural level, resulting in the establishment of Estonian language literature, theatre and professional music and led on to the formation of the Estonian national identity and the Age of Awakening. Among the leaders of the movement were Johann Voldemar Jannsen, Jakob Hurt and Carl Robert Jakobson.