Task: Text Categorization
Input (English): He staged a sea battle on the Fucine Lake with the silver Triton rising from the center to start the fight, added a Procurator of the Tiber Bank to the senatorial commission charged with preventing flooding, and completed the Anio Novus by bringing it over the Praenestine Gate. He gave clemency to Caractacus, who lived out the rest of his life in Rome after being part of the victory that gave his son his name. That son was with (*) Messalina, but was murdered after this man's successor and son-in-law by marriage, Nero, took the throne. For 10 points, name this emperor who oversaw the conquest of Britain and was likely poisoned by his niece and wife, Agrippina.
Output (English): History