The empire's authority — its government type. Pick one.
Democratic governments have regular elections where all citizens can vote on who should represent them.
Oligarchic governments are ruled by a small group of individuals that hold all political power.
Dictatorial governments are ruled by a single individual for life that wields absolute control over the state.
Imperial governments are similar to dictatorial ones, except that the throne is always inherited by a designated successor upon the ruler's death.
Machine Intelligences are immense artificial group minds that have been networked into a single gestalt consciousness. Most of the actual
Corporate governments are organized as a massive commercial enterprise that has completely supplanted the role of the state.