Detailed Instructions: 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.
Q: Two years after its conclusion, forces of Father Kostadin Buvski and Leonid Vulgaris met at Gremen to decry it as ineffective. Romania was forced to exchange South Bessarabia to Russia for Dobruja, and the newly created Greater Bulgaria was further divided into North Bulgaria, Eastern Rumelia, and Macedonia. Its eventual mediator offered himself as an "honest broker" between nations represented by Alexander Karatheodori and Alexander Gorchakov, although all of the signers of the 1856 Treaty of Paris were present. FTP, name this meeting convened to rethink the Treaty of San Stefano, an 1878 conference chaired by Otto von Bismarck in the German capital.
A:
History