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ComparisonNotes Enterprise
Episode IIThe Original Series
Episode IIIMovies
Episode IVThe Next Generation
Episode VDeep Space 9
Episode VIVoyager
Star WarsStar Trek Related Reading

Introduction
Overview
Holdings
Weaponry
Shielding
Power Generation TechnologyFTL Travel
STL Travel
Fleets
Factions
Politics
miscellaneous
Statistics
Databank
Databank
The Republic consists of "thousands" of systems. The Wookies on Kashyyyk appear to not be part of the Republic, although allied to it.

The Separatist Union is an alliance including the Banking Clan, Commerce Guild, and Trade Federation and a number of planets not specified in ROTS.

The Galactic Empire, founded at the end of ROTS, consists at this point in time of the planets of the Republic, as well as (presumably) those which had been controlled by the separatists.

There are also neutral systems, in which much of the actual war took place.