 Croatia is inhabited mostly by Croats (90.4%), while minorities include Serbs (4.36%), and 21 other ethnicities (less than 1% each).The demographic history of Croatia is marked by significant migrations, including the arrival of the Croats in the area growth of Hungarian and German-speaking population since the union of Croatia and Hungary, and joining of the Habsburg Empire, migrations set off by Ottoman conquests and growth of Italian speaking population in Istria and in Dalmatia during Venetian rule there.After the collapse of Austria-Hungary, the Hungarian population declined, while the German-speaking population was forced or compelled to leave after World War II and similar fate was suffered by the Italian population.