Answer:
By article 25 of the Treaty of Berlin, 1878, Austria-Hungary was permitted to occupy and administer Bosnia and Herzegovina. The crisis in 1908-1909 sprang from the fact that Serbia believed that she must prevent the consummation of annexation by Austria-Hungary or give up permanently her long-cherished hopes.
since the Ottoman Empire controlled the Bosporus Strait and had a strong economy, they helped interconnect Afroeurasia. the place was also a center of Islam, which attracted people from different parts of the world to the city of Istanbul.
