A unification of Germany led by Prussia would mean the domination of the new state by the Protestant House of Hohenzollern, a more palatable option to Protestant northern German states. Another complicating factor was the Austrian Empire's inclusion of a large number of non-Germans, such as Hungarians, Romanians, Serbs, Croats, and Czechs. The Austrians were reluctant to enter a unified Germany if it meant giving up their non-German speaking territories.