Croatian Spring was a national movement founded in the ranks of the League of Communists of Croatia, among the students and intellectuals in the period of late 1960s and early 1970s. The focus of the movement was a fight against unitarism and a fight for the reform of the economic system, cultural and political life. In the LCC there were two different approaches to the development of Yugoslav socialism. The reformists approach implied confederalization and liberalization. Croatian Spring played its role in spreading their ideas, so even after its end the main ideas got fulfilled indirectly with the almost confederate Constitution of 1974. With the change of Yugoslav politics, on the backs of the Croatian spring many other movements appeared which indirectly and directly brought to the development of the contemporary democratic Republic of Croatia.