In fact, as Lincoln says, the Civil War was fought to ensure the continuance of democratic self-government in the United States. The Civil War was necessary so that the nation might attain "a new birth of freedom, and that government of the people, by the people, for the people, shall not perish from the earth."
A government of the people, by the people, and for the people
Of, by, and for - those three little words - define the essence of democratic self-government. As we listen to that well-known articulation of what our government is all about, we need to understand that the words are not "equal" in their importance.
Many want (and would be satisfied with) a government that is "for" the people, that will deliver for them. That, definitely, is what we always must demand of the government, that it be for the people. Still, that is not good enough.
Unless our government is truly "of" and "by" the people it will never actually be "for" them. That part of Lincoln's pronouncement that holds out hope for a government that will act on behalf of the people, that will be "for" the people, can only be achieved if the government is "of" and "by" the people themselves.
As I like to put it, we won't ever have democratic self-government if we don't get involved ourselves.
Lincoln said it better (of course), but let's be clear that this is exactly what Lincoln said.