1: The U.S . landmass , he insisted ,  is well adapted to be the home of one national family ; and it is not well adapted for two , or more  because  there is no line , straight or crooked , suitable for a national boundary upon which to divide .  2: These places had begun as federal territory -- the common inheritance of all Americans -- and it was the federal government that had indeed brought these new states to life . 3: Lincoln saw the federal government as pre-eminent and believed there was no logical border for dividing the U.S.
1: The U.S . landmass 2: federal territory 3: the U.S.