Original: Bounded on the east and south by the Carpathian mountain range , historical Transylvania extended in the west to the Apuseni Mountains ; however , the term frequently encompasses not only Transylvania proper , but also the historical regions of Cri ana , Maramure , and ( Romanian ) Banat .
Simplified: But Transylvania was also ruled from Alba Iulia during its dependence from the Ottoman Empire , and the seat of the Transylvanian Diet was moved to Sibiu for some time in the 19th century .