When did Transylvania become part of the Habsburg 's Austrian empire ?
A few rulers of territories in what is now Romania distinguished themselves : these rulers include Stephen the Great , Vasile Lupu , and Dimitrie Cantemir in Moldavia ; Matei Basarab , Vlad the Impaler , and Constantin Brâncoveanu in Wallachia ; and John Hunyadi ( " Ioannes Corvinus " ) and Gabriel Bethlen in Transylvania .