Why do I get the feeling that she is including slaves and indigenous in her "not one habitation left standing" fantasy?
In August, 1865 around Hampton, Virginia, for example, Union cavalry were sent to dislodge 5,000 Afrikans from liberated land. Twenty-one Afrikan leaders were captured, who had been "armed with revolvers, cutlasses, carbines, shotguns." In the Sea Islands off the south Carolina coast some 40,000 Afrikans were forced off the former plantations at bayonet point by Union soldiers. While the Afrikans had coolly told returning planters to go - and pulled out weapons to emphasize their orders - they were not able to overcome the U.S. Army. In 1865 and 1866 the Union occupation disarmed and broke up such dangerous outbreaks. The special danger to the U.S. Empire was that the grass-roots political drive to have armed power over the land, to build economically self-sufficient regions under Afrikan control, would inevitably raise the question of Afrikan sovereignty.
https://readsettlers.org/ch4.html#4
imagine a nation ruled by black people and for black people in the 19th century!