The main advantage that corporations have is.

Limiting liability for owners and stockholders.

Explanation: Corporation is a way of referring to large companies or even organizations seen as mechanized with a greater focus on profit and less or nonexistent to people. A group of people who act as if they were one body, one person, seeking to achieve common goals subject to the same rules.  

In economic terms, corporation features a specific means of organizing production and making profits in order to maximize efficiency and minimize transaction costs.

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.