What did the Writs of Assistance do?

D. Prevent smuggling.

Explanation:

In common, customs writs of assistance worked as common search warrants that did not terminate, providing customs executives to search wherever for hidden goods without having to receive a particular warrant.

Writ of assistance, in English and American colonial history, a universal search warrant published by superior countrified tribunals to assist the British administration in implementing trade and exploration laws.

sense of self-interest