After the turks were defeated in 1687 all of hungary, transylvania, croatia, and slovenia came under habsburg rule, thus establishing in southeastern europe the

All of Transylvania, Hungary, Slovenia, and Croatia came under Habsburg rule after the Turks were defeated in 1687, thus, establishing the Austrian Empire in southeastern Europe.

To add, the Austrian Empire was a Central European multinational great power in 1804 to 1867 created by proclamation out of the realms of the Habsburgs.