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).
Young Ottomans
In 1876, the Young Ottomans had their defining moment when Sultan Abdul Hamid II reluctantly promulgated the Ottoman constitution of 1876 (), the first attempt at a constitution in the Ottoman Empire, ushering in the First Constitutional Era. Although this period was short-lived, with Abdul Hamid II ultimately suspending the constitution and parliament in 1878 in favor of a return to absolute monarchy with himself in power, the influence of the Young Ottomans continued until the collapse of the empire. Several decades later, another group of reform-minded Ottomans, the Young Turks, repeated the Young Ottomans' efforts, leading to the Young Turk Revolution in 1908 and the beginning of the Second Constitutional Era.