Nisbett and Cohen Argue That the U

Nisbett and Cohen argue that the U.S.South has historically been more violent than the North because

A) the South is hotter than the North.
B) there was a more extensive slave trade in the South than the North.
C) the South is poorer than the North.
D) there were more herders in the South than in the North.
E) there are more guns available in the South than in the North.