Re: More detail... (The things I don't know.)
If these words were explained to students as we understood them, there might be an interest in the history of the country. Without any background, they are now just doing things by rote and have no clue what happened to get us to where we are today. Of course they have no real clue to why 'indivisible' was in there. When I first learned it, "Under God" wasn't in it.