Answer:
Two elected officials called consuls commanded the military: Roman Republic.
A single individual held most of the power in the government: Roman Empire
Dominate, also called the late Roman Empire.
The most powerful senators fought among themselves to control Rome: Roman Republic.
Step-by-step explanation:
During the Roman republic, each year two consuls were elected to serve a join one year term. Each month one of them ruled the empire and commanded the military.