Answer:
dictator
Step-by-step explanation:
This is a question about Register and Fact. As a register, the statement "... Who had absolute control over the military and government..." matches with the meaning of DICTATOR. Also, in the early days of the Roman Republic, a DICTATOR was the name or an actual title given to a person whom the magistrate appointed by the Senate to rule over the military and government temporarily.
Hence, in this case, the correct answer is DICTATOR.