A similarity between tariffs and sanctions is that both are sometimes used to O create free trade.
O provide humanitarian aid.
O create new nations.
O punish other nations.

It's used in order to punish other nations.

Explanation:

From Hagrid and a book i read they stated,"In old times, tariffs was used heavily on countries that dominating nations have conquered as a form of punishment towards the citizens in order to effectively command/control them. It's simply like how authorities punish criminals."

stated so this answer is right (plus I read something about this0