Star Wars: Dawn of Darkness
The Galactic Empire, also known as the First Galactic Empire, the New Order, Palpatine’s New Order, the Imperium or simply the Empire, was a galactic government established by Supreme Chancellor Palpatine to replace the Galactic Republic in the year 19 BBY following the conclusion of the Clone Wars.
The main rationale behind the reformation of the long troubled Galactic Republic into the Empire was in order to provide the security which would prevent another separatist movement such as the one at the heart of the Clone Wars from ever occurring again. In addition, the New Order would rely on an expanded and sustained military force to enforce internal security and defend against external threats, taking the responsibility that used to belong to the Jedi Knights before their betrayal of the Republic and their failed rebellion.
Another main feature of the new Empire is the creation of the positions of Sector Moff’s and Grand Moff’s. Individuals hand selected by the Emperor and given power and responsibility over their territories which in part used to belong to the former Republic Senate and the current Imperial Senate.