The rise of nationalism in the Balkans was a major factor in the Ottoman loss of control. As the Balkan peoples began to develop a sense of national identity, they increasingly sought to break free from Ottoman rule. This led to a series of uprisings and wars in the Balkans, which eventually resulted in the independence of most of the Balkan states.
The decline of the Ottoman Empire was another major factor in the Ottoman loss of control. The Ottoman Empire was a vast and powerful empire, but it was in decline by the 19th century. This was due to a number of factors, including the rise of nationalism, the increasing power of European powers, and the corruption and inefficiency of the Ottoman government.
The intervention of foreign powers was also a significant factor in the Ottoman loss of control. The European powers were interested in the Balkans for a number of reasons, including the resources of the region, the strategic importance of the region, and the desire to protect their own interests. The European powers intervened in the Balkans on a number of occasions, and this intervention helped to weaken the Ottoman Empire and to contribute to the loss of Ottoman control.
In conclusion, the growth of cities in the Balkans was a significant factor in the Ottoman loss of control, but it was not the only reason. Other factors, such as the rise of nationalism, the decline of the Ottoman Empire, and the intervention of foreign powers, were also major contributing factors.