It expresses that the people are working together to make a more perfect union and make the United States of America a legitimate country with a constitution. The people in power are chosen by the general population, so it's a form of representative democracy.
In dramatic structure, I think dialogue is used to appeal to the reader by making he/she feel like they are actually there and to just bring it to life. Hope that helps.
A house built with strips of sod and laid like brickwork. Used by settlers of the Great Plains when timber was scarce.
Sergei's reaction is hostile. He is not interested in answering