Croatia was home to a strange native species that lacked galactic success due to their short lifespans which required complicated mathematics to artificially extend. Darth Snuggle and Darth Stankbreff were native Croatians. They also drooled a lot and drank out of toilets. Another native to Croatia was Jedi Knight Obie Juan.
Humans were not native to Croatia, but for some reason decided to setle there. Darth Dismulll was born on Croatia. Prior to becoming a Sith, he almost froze his balls off. This was believed to have been at least partially responsible for his turn to the Dark Side.