 The traditional division of the country into counties was abolished in the 1920s, when the Kingdom of Serbs, Croats and Slovenes and the subsequent Kingdom of Yugoslavia introduced oblasts and banovinas respectively.After 1945 under Communist rule, Croatia, as a constituent part of Yugoslavia, abolished these earlier divisions and introduced municipalities, subdividing Croatia into approximately one hundred municipalities.Counties, significantly altered in terms of territory relative to the pre-1920s subdivisions, were reintroduced in 1992 legislation.