The Rusyns are an ethnic group on the western periphery of the East Slavic nations. They live mainly in the Polish-Ukrainian-Slovak borderland and in the Vojvodina. In medieval times the Rusyn homeland was the site of the Duchy of Galicia-Volhynia and the Kingdom of Rus. In later times the lands were under Polish and later Austrian rule. Rusyns formed two ephemeral states after World War I: the Lemko-Rusyn Republic and the Komancza Republic.