sentences:  The northern wall of an 11th-century Byzantine basilica still stands in the Loo Microdistrict.From the 14th to the 19th centuries, the region was dominated by the Abkhaz, Ubykh and Adyghe tribes, the current location of the city of Sochi known as Ubykhia was part of historical Circassia, and was controlled by the native people of the local mountaineer clans of the north-west Caucasus, nominally under the sovereignty of the Ottoman Empire, which was their principal trading partner in the Muslim world.The coastline was ceded to Russia in 1829 as a result of the Caucasian War and the Russo-Turkish War, 1828–1829; however, the Circassians did not admit the Russian control over Circassia and kept resisting the newly established Russian outposts along the Circassian coast ().