At the point the western half of the Roman Empire collapsed they were using a system with two emperors due to the massive amount of territory being impractical for one man to govern, senate or no. Only one of the imperial titles imploded, with the other going along just fine for centuries before that part of the empire also started to collapse.
At the point the western half of the Roman Empire collapsed they were using a system with two emperors due to the massive amount of territory being impractical for one man to govern, senate or no. Only one of the imperial titles imploded, with the other going along just fine for centuries before that part of the empire also started to collapse.