Answer:
Tea Act.
Step-by-step explanation:
The act that reduced the tax on British tea in order to give it an unfair advantage over tea imported from other countries was the Tea Act.
The Tea Act was passed by the British parliament on the 10th of May, 1773. The act granted the British tea company a monopoly on the importation of tea to the American colonies, as well as eliminated the customs duty on British tea and permitted its direct export to America.