Complex sentence: With the end of the Clone Wars and the formation of the First Galactic Empire, Palpatine rules the Empire with absolute power, with third-in-command Sate Pestage as Grand Vizier to run the Empire day to day.
Split into simpler sentences: With the end of the Clone Wars and the formation of the First Galactic Empire, Palpatine rules the Empire with absolute power. His third-in-command, Sate Pestage, serves as Grand Vizier and runs the Empire day to day.