When the Hungarian State Archives were established in 1875 , most of the old Transylvanian archives were moved to Budapest .
After Transylvania entered the Habsburg Empire in 1688 , methods of document preservation gradually improved , notably through the introduction of registers at the chief administrative institutions .
When the Hungarian State Archives were established in 1875 , most of the old Transylvania archives were moved to Budapest .
After Transylvania entered the Habsburg Empire in 1688 , methods of document preservation gradually improved , notably through the introduction of registers at the chief administrative institutions .