In the mid-1800s, northerners used the term slave power to criticize what
they believed to be the excessive political influence of which group of people?
o
a. foreign slave traders
o
b. freed slaves
o
c. southern slave owners
d. antislavery activists

A. Foreign slave traders

Explanation:

they have different colored collars

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".