The purpose of a was to increase the price of imports in order to allow for the American industry to establish itself

ok, but what is your question? as soon as you tell me i will answer your question : )

an era of negotiation.

is that an answer to your question?

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.