The middleground is the space within a composition between the foreground and the background. In the shot composition above, it is the yellow-outlined space, which you can see juxtaposed against the red foreground (the obstructive bars) and the out-of-focus background.
Duvitch family is the protagonist of the story. They are narrated the most important ones. The Duvitch family is the main aspect and conflicted in the story. There is a begining and improvment in the end to their characters.