US Indebtedness knüpft an
an  Short +Long -Aftereffects
and that gives rise to to the discussion 
of erraneous interpretations of deficit 
                                                  +foreign balance
Savings discussion                    (extern, debt)

geographical distribution of effective demand
In this ?   (between regions+countries)
capacity!  interest, capital ? etc
Discussion of multiple effect:
Lay                                           several variables

                                                ?  (elasticities)