slavocracy

noun

1. (US, historical)The persons or interest representing slavery politically, or wielding political power for the preservation or advancement of slavery.

   “This pressure brought the Southern slavocracy into conflict with Northern business interests. Slaveowners precipitated a war to defend the slave system and its accompanying way of life.”

   “Close on their heels was any Texan who had ever said a word against the slaveocracy, or the cotton men, or was suspected of voting for Lincoln.”