Final answer:
The proprietary regime in South Carolina was more authoritarian than other colonies' governments due to the proprietors' control over government actions and institutions.
Step-by-step explanation:
The proprietary regime in South Carolina was more authoritarian than the government of other colonies during that time. Proprietary colonies, of which South Carolina was one, were like the fiefdoms of the Middle Ages with the proprietors being the ultimate sources of authority. They controlled all actions and institutions of government, determining the form of government, choosing officers, and making laws—though still subject to the advice and consent of the freemen. This is in contrast with royal colonies, where the crown appointed governors, and corporate colonies, where voters elected governors without the need for crown approval. Thus, the proprietary system allowed for a proprietor to exert considerable control, which could be seen as more authoritarian compared to the other forms of colonial government.