After 1688, britain relaxed their enforcement of colonial rules, especially trade laws. what was this new policy called?

Salutary neglect.

Explanation:

Salutary neglect was an informal British policy for the 13 American colonies. Since it was expensive to establish administration offices and send troops to America, the British government lacked the capacity to enforce trade laws. Therefore, those rules were laxly implemented and imperial surveillance was eased as long as they remained loyal to the British government.