The Following Questions Refer to the Excerpt Below

The following questions refer to the excerpt below.
"It is thus that our political system,resting on the great principle involved in the recognized diversity of geographical interests in the community,has,in theory,with admiral sagacity,provided the most efficient check against their dangers.Looking to the facts,the Constitution has formed the States into a community only to the extent of their common interests;leaving them distinct and independent communities as to all other interests,and drawing the line of separation with consummate skill,as before stated."
John C.Calhoun,1828
-Calhoun's comments reveal that

A) regional interests were beginning to trump national concerns for many political leaders.
B) the question of slavery had become a national emergency.
C) great public support existed for American territorial expansion.
D) Americans were increasingly hostile of the Supreme Court's interpretation of the laws.