Final answer:
Proprietary charters were granted to merchants in a North American colony to reduce governing costs and allow for ownership of property and local governance by the merchants.
Step-by-step explanation:
In one North American cob the merchants.
Proprietary colonies were established in the British North American colonies, where the proprietors had ultimate authority and controlled all government actions and institutions.
This practice of granting proprietary charters provided a way for merchants to have control over the governance and reduce the costs of governing, while also allowing for ownership of property in the colony.