After the Revolutionary War, why did Adams never again find "a role so well suited to him" as that of "America's foremost agitator"?

Adam's particular brand of writing and speech-making was at its most effective when pleading a cause. When the colonists won the Revolutionary War Adams primary cause no longer existed.

Explanation:

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.