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: He never married, and was succeeded on the throne by his incompetent brother, Constantine VIII. Eldest son of Romanus II, the first thirteen years of his actual reign were overshadowed by revolts by Bardas Scleros and Bardas Phocas. Theoretically emperor from early childhood, his developing years were spent in the shadow of Nicephoras Phocas and John Tzimices. Defeated in 986 by a force under Samuel at Trajan's Gate, his subsequent military campaigns until his 1025 death were all victorious. He conquered Armenia to the east, but is more often associated with the peoples to the west whom he massacred. FTP, name this Byzantine emperor, often given the title "the Bulgar-slayer. "
A:
History