If free trade benefit all nations in the long run why do nations so often establish barriers, like tariffs, to make free trade impossible

Select the correct answer from the drop-down menu. during the (scientific revolution, renaissance, industrial revolution), european intellectuals rejected many teachings of ancient scientists promoted by the church. to replace flawed theories, scientists began researching and conducting experiments. they used critical and reasonable thinking to draw concrete conclusions. this also led to the (scientific revolution, industrial revolution, enlightenment). it was an age that focused on using reason for understanding laws of nature and identifying humans' natural rights.

The articles of confederation did not allow the government the power to tax or to force the states to do anything. what challenges could this cause

What does the term “escalation” refer to?