Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The shore of this body of water holds Tekkekoy Caves dating from the Stone Age in what is now Samsun Province. This body of water's east coast was the home of the Kingdom of Colchis [KOL-kis]. On its west coast, this connects to Lake Beloslav through Lake Varna. This body's northwestern ports are Illichivsk and Odessa, and in the northeast this is connected by the Kerch Strait to the Sea of Azov. Its north coast includes Yalta and Sevastapol on the Crimean Peninsula. To its southwest, the Bosphorus connects this body of water to the Sea of Marmara. Name this sea surrounded by Ukraine, Russia, Georgia, Bulgaria, Romania, and Turkey.
Social Science