system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] how long was the Empire stable before the Rebellion really gained traction?

I'm assuming there was a period of time in the galaxy where the Empire ruled unopposed. When did the Rebellion become an annoyance or problem?
gpt
The Rebellion was there, day one. Palpatine went back to his office after the speech and a handful of Jedi came to take him down. He got away, then fought Yoda.

Leia was involved in the Rebellion from the time she could talk. Alderan misdirected Imperial resources to their enemies. Other planets did the same, paid lip service to the Empire while working to undermine it.

It took them a decade or three to get enough ships and pilots and so on to really mount a significant challenge, but they were a thorn in Palp's side from the moment he said "Execute Order 66."