system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why was the Droid attack on the wookies such a big deal, what is done on the planet of kashyyyk that the Republic could not afford to lose?

(Insert meme here)
gpt
It would depend on which canon you're looking at.

In Canon, Kashyyyk has lots of oil, and the droids want to destroy the refinery. No oil, no fuel, ships don't fly as far. 

In Legends, Kashyyyk is a massive navigation hub for the eastern quadrant of the galaxy, connecting Hutt Space, the Corellian Run and the Perlemian Trade Route, as well as many other smaller routes that go straight to the core worlds. If the Seperatists had control of Kashyyyk, they could hit the core worlds whenever they wanted and win the war in a matter of days. 

The Wookiees also have some secret knowledge of other hyperspace routes that neither the Republic or Separatists knew about, and both factions wanted to get their hands on it. 


In Legends, Kashyyyk is so important to hyperspace travel that it really isn't something you can afford to lose. 

The only reason the Separatists were able to hit Coruscant when they did was because Palpatine deliberately gave them a route only he knew about.