Answer: Regulate and limit the issuance of paper currency by the colonial governments in British North America.
Explanation: The primary purpose of the Currency Act during the colonial period was to regulate and limit the issuance of paper currency by the colonial governments in British North America. It was passed by the British Parliament in 1764 to control the monetary system and prevent inflation caused by the colonies printing too much paper money. The act prohibited the colonies from printing paper currency and required them to use British pound sterling as the only legal currency. This limited the ability of the colonies to finance their own economies and was a contributing factor to the economic tensions that eventually led to the American Revolution.