 Complete the following phrase:  The Principality of Romania gained Northern Dobruja including the Danube Delta and the Snake Island in 1878 after defeating the Ottoman Empire together with Russia in the Russo-Turkish War of 18771878. This territory was given by Russia as an exchange or compensation for the annexation by the latter of the Romanian region of Southern Bessarabia. Romania later conquered Southern Dobruja as well in 1913 after 