Decline and modernization of the Ottoman Empire
Beginning from the late eighteenth century, the Ottoman Empire faced challenges defending itself against foreign invasion and occupation. In response to foreign threats, the empire initiated a period of tremendous internal reform which came to be known as the Tanzimat, which succeeded in significantly strengthening the Ottoman central state, despite the empire's precarious international position. Over the course of the nineteenth century, the Ottoman state became increasingly powerful and rationalized, exercising a greater degree of influence over its population than in any previous era. The process of reform and modernization in the empire began with the declaration of the Nizam-ı Cedid (New Order) during the reign of Sultan Selim III and was punctuated by several reform decrees, such as the Hatt-ı Şerif of Gülhane in 1839 and the Hatt-ı Hümayun in 1856. At the end of this period, marked with 1908, to a degree the Ottoman military became modernized and professionalized according to the model of Western European Armies. The period was followed by the defeat and dissolution of the Ottoman Empire (1908–1922).
Dissolution of the Ottoman Empire
Europe became dominated by nation states with the rise of nationalism in Europe. The Ottoman Empire was a religious empire. The 19th century saw the rise of nationalism under the Ottoman Empire which resulted in the establishment of an independent Greece in 1821, Serbia in 1835, and Bulgaria in 1877-8. Many of the local Muslims in these countries died during the conflicts and massacres while others fled. Unlike the European nations, the Ottoman Empire made no attempt to integrate conquered peoples through cultural assimilation. The Porte had no official policy of converting the non-Muslims of the Balkans or Anatolia into Islam. Instead, Ottoman policy was to rule through the millet system, constituting of confessional communities for each religion..