Decline of the Ottoman Empire in the context of "Russo-Turkish Wars"

The Treaty of Küçük Kaynarca (Turkish: Küçük Kaynarca Antlaşması; Russian: Кючук-Кайнарджийский мир), formerly often written Kuchuk-Kainarji, was a peace treaty signed on 21 July [O.S. 10 July] 1774, in Küçük Kaynarca (today Kaynardzha, Bulgaria) between the Russian Empire and the Ottoman Empire, ending the Russo-Turkish War of 1768–1774 with major concessions to Russia. The concessions to Russia were not merely territorial; not only was the Crimea Khanate (not Crimea proper) ceded, but Russia also gained the right to construct a Russian Orthodox church in Constantinople, claiming to be the protector of the Orthodox Christians in the Ottoman Empire. This was a pretext for frequent and numerous interventions in the decades to follow. Ottoman Christians started to feel more empowered as European and Christian powers demonstrated their rising influence and political power. Access to Europe's political networks, markets and educational institutions created a class privilege for Ottoman Christians, and scholars often regard the treaty as turning point for relations between Ottoman Christians and the European nations.

The treaty was a milestone in the history of the decline of the Ottoman Empire, as for the first time a foreign power had a say in the governance of the Porte in assuming direct responsibility for the fate of the Empire's Orthodox Christian subjects.

In diplomatic history, the Eastern question was the issue of the political and economic instability in the Ottoman Empire from the late 18th to early 20th centuries and the subsequent strategic competition and political considerations of the European great powers in light of this. Characterized as the "sick man of Europe", the relative weakening of the empire's military strength in the second half of the nineteenth century threatened to undermine the fragile balance of power system largely shaped by the Concert of Europe. The Eastern question encompassed myriad interrelated elements: Ottoman military defeats, Ottoman institutional insolvency, the ongoing Ottoman political and economic modernization programme, the rise of ethno-religious nationalism in its provinces, and Great Power rivalries. In an attempt to triangulate between these various concerns, the historian Leslie Rogne Schumacher has proposed the following definition of the Eastern Question:

The period in which the Eastern Question was internationally prominent is also open to interpretation. While there is no specific date on which the Eastern question began, the Russo-Turkish War of 1828–1829 brought the issue to the attention of the European powers, Russia and Britain in particular. As the dissolution of the Ottoman Empire was believed to be imminent, the European powers engaged in a power struggle to safeguard their military, strategic and commercial interests in the Ottoman domains. Imperial Russia stood to benefit from the decline of the Ottoman Empire; on the other hand, Austria-Hungary and United Kingdom deemed the preservation of the Empire to be in their best interests. The Eastern question was put to rest after the First World War, one of the outcomes of which was the collapse and division of the Ottoman holdings.

The identification of the causes of World War I remains a debated issue. World War I began in the Balkans on July 28, 1914, and hostilities ended on November 11, 1918, leaving 17 million dead and 25 million wounded. Moreover, the Russian Civil War can in many ways be considered a continuation of World War I, as can various other conflicts in the direct aftermath of 1918.

Scholars looking at the long term seek to explain why two rival sets of powers (the German Empire, Austria-Hungary, and the Ottoman Empire against the Russian Empire, France, and the British Empire) came into conflict by the start of 1914. They look at such factors as political, territorial and economic competition; militarism, a complex web of alliances and alignments; imperialism, the growth of nationalism; and the power vacuum created by the decline of the Ottoman Empire. Other important long-term or structural factors that are often studied include unresolved territorial disputes, the perceived breakdown of the European balance of power, convoluted and fragmented governance, arms races and security dilemmas, a cult of the offensive, and military planning.