Specifically, I'm just finishing Dred: A Tale of the Great Dismal Swamp by Harriet Beecher Stowe. Her treatment of slavery and racism is breathtaking, but we know with good certainty that First Nations people were also sequestered in the huge tract of swampland the novel is about, yet she almost never references these people.

There are also multiple references to territory skirmishes in 'frontier' states over slavery in the novel, but zero (for most of the volume, at least. I'm not quite through it) references to indigenous removal. Given the Indian Removal Act in 1830, and the Trail of Tears being in full swing during this period, it seems unusual that such a conscientious author would seem to know nothing of these efforts by the Federal powers.

Was Stowe unaware, or surprisingly apathetic to these contemporary happenings?