The correct answer to this open question is the following.
The concept of European nationalism was still in its infancy during the eighteenth century. What the Hapsburg monarchs had done to foster a common national sentiment among the people of the Austrian empire was to create a unity sentiment in the different territories to foster a kind of bond between them and the Austrian monarchy.
The Hapsburg empire constantly grew, as we know the kingdom developed through the years. The monarchy developed effective central administrative states buck what lacked was the sense of identity of the many territories that belonged to the kingdom. That lack of "common bond" did not allow the Hapsburg kings to instill the common culture and traditions in the majority of towns of the kingdom.
