The corporate colony had a charter that was granted to them by the English Monarch to stockholders. But in 1624, the Monarch changed certain colonies to royal colonies. This meant the the colonies that were changed would be under the direct control of the king. In the end the colonies that remained corporate colonies were Rhode Island and Connecticut. Pennsylvania, Delaware, and Maryland remained proprietary colonies. The other 8 colonies (New Hampshire, New York, New Jersey, North Carolina, South Carolina, Georgia, Massachusetts, and Virginia) were changed to royal colonies.
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