Answer:
The declaration of independence is an important part of American democracy because first it contains the ideas or goals of our nation.
It means - a forcible overthrow of a government or social order, in favor of a new system.
Most isolationists felt that there was no need for americans to feel threatened by developments in Europe and Asia because the vast pacific and atlantic oceans insulated the country from troubles in those regions, and the United States had formed friendly alliances with all the other nations in the Western hemisphere.
The answer is D, that the people believed they lived in a fairer society, if I'm correct. The Third Estate was basically the lower/middle class and many of the people in France made up this section of society.