Which trait of classical Roman political thought could be added to the list? Veto power
Democratic elections
Universal suffrage
Checks and balances

the answer wold be b) travel among nations should be regulated by an international organization

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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.