First: remember this is 250 or so years ago. Secondly you could say that everyone else was the control group as this king taxed tea and coffe and later outlawe

First: remember this is 250 or so years ago. Secondly you could say that everyone else was the control group as this king taxed tea and coffe and later outlawed at least coffee entirely. Edit: according to some sources it was his dad who first introduced steep taxes on tea and coffee.