OTL Carolina was discovered first by Dutch sailing down the coast of Atlantis since 1450, who founded settlements (i.e. trading places) there and in OTL Georgia. In 1469, Brittany sent a ship to the new world which found to Caroline too, but the stronger Dutch didn't allow them to make landfall. However, in 1486 France sent the first ships to Atlantis, under a captain Coulon (of the infamous pirate family), making claim in the area of Caroline, where they founded Charlesbourg at the site of OTL Charleston.