Why was the Carolina colony split into two colonies in 1712? Colonists fought for and won control of the northern half.
The southern half was given to American Indians.
Carolina was too large to be governed as a single colony.
The monarch was forced to sell part of Carolina to Spain.

The Carolina colony was too large to be governed as one

Explanation:

The Carolina colony was growing in different ways and the problems with Boarder disputes, waring with natives etc proved that management of this colony of this size to be difficult thus the split occurred, both the Northern and the Southern part of the colony agreed for the split to make everyone's lives a lot easier

for why it was for independence

representative government