>>717769875
The Republic might have been formed by normies but it is repeatedly stated that it is the Jedi who support and protect it. Without the Jedi the Republic could never exist like it did and of course Palpatine took the Republic and turned it into the Empire after removing, re-educating and reintegrating them into the fucking soil.

Besides, before the Ruusan Reformation and the Rule of Two the Sith would turn up in the tens of thousands every couple centuries or so.