The Imperial expansion was an expansion effort carried out by the Galactic Empire at some point during its reign across the galaxy. During this effort, the Empire erected a military base on the volcanic Outer Rim planet of Nevarro. This structure persisted into the New Republic Era and was used by Moff Gideon's Imperial remnant for genetic experiments. Around 9 ABY, the expansion era base was finally destroyed by a team led by Magistrate Greef Karga.