"Slave Power was a recognized and often used political term in the 1850s --- sort of like "Pro-Choice" is today. It has nothing to do with the 1960s -- DUDE!"
Careful, that's starting to sound like what Abraham Lincoln would have called "BS macho rhetoric," in his florid, mid-nineteenth century, archaic manner of speech.
So you are telling me your historical knowledge is so thin that you think I made up the term Slave Power?