 The other faction supports a decentralised and multicultural federation that would preserve existing identities while promoting unity, while being opposed to the idea of centralisation and assimilation that they deemed as effectively favouring Serb hegemony rather than Yugoslav unity.The concept of Yugoslavism first arose in the 1830s with the creation of the Illyrian movement that based its views of South Slavic national identity upon the ideal of national awakening of the French Revolution.The Illyrian movement was formed by Croatian writers who emphasized the common ethnic and linguistic ties between the South Slavic peoples as a basis for their cooperation and eventual political unification.