What factors related to the Eastern Crisis contributed to the outbreak of World War 1?
The Eastern Crisis pertains to problems posed by the decay of the Ottoman Empire. Primary among these problems were the instability in the European territories that had been ruled by the Ottoman Empire. After the defeat of the Ottomans in the Russo-Turkish War (1768–1774), the dissolution of the Ottoman Empire appeared to be imminent. Several European powers engaged in a power struggle to safeguard their own national interests in the Ottoman domains.
More details are available in this discussion of the 'Eastern Question'.