system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Since the Kaminoans and the Trade Federation were both able to create large armies that the Republic and the Jedi were unaware of for over a decade, did the empire ever do anything to prevent this from happening again in the future?

Or is the galaxy just so large that it's nearly impossible anyway? If you think about it, the kaminoans/Trade Federation could have conquered the galaxy, had the sith not been involved.
gpt
In Legends, both the Kaminoans and members of the Trade Federation built new armies after the Clone Wars, and both were swiftly dismantled by the new Galactic Empire. 


In canon, The Empire's biggest weapon in preventing uprising was fear of reprisal. The built really big spaceships with really big guns and mercilessly slaughtered anyone who even remotely tried to fight back. After a certain point, it's easier to just live under the Empire's boot than risk being stomped.

Also, you have to realize how much effort went into the Clone Wars the first time around. Palpatine had both armies built in secret, by proxy. Then he actively distracted the Jedi with other matters, (and tied up the Republic by bureaucracy) until he was ready for the war to begin.