Forum:KB:Are these all canonical?

Hi, are these all canonical Star Wars? the time line and all?

Whats in the Star Wars canon, alien races evolved or genetically manipulated?

Like the alien races, instead of evolution, suited in my understanding would be genetic manipulation because a humanoid race needs to survive on a planet climate.

Rakatan did slavery accordingly to SW: Knights of the Old Republic, to get most of it, they have to genetically modify human in different environment.

Anyone can provide input?