Final answer:
The subject of this question is History, and it is about a specific Roman emperor who devalued the currency, was a peaceful ruler, and was ultimately assassinated. The emperor was also known for his participation in gladiatorial games and was killed by a rival family's gladiator.
Step-by-step explanation:
The subject of this question is History. The question is asking about a specific Roman emperor who devalued the Roman currency and was a peaceful ruler. The emperor is also known for taxing the senatorial class, which ultimately led to his assassination.
Additionally, the emperor was known for his strength and participation in gladiatorial games, and he was killed by a rival family's gladiator while taking a bath.