Confederacy is definitely on the list, history of the author is very worth knowing also...
considering some of the other choices... "Ishmael"
Ishmael is a 1992 philosophical novel by Daniel Quinn. It examines the mythological thinking at the heart of modern civilization, its effect on ethics, and how this relates to sustainability and societal collapse on the global scale.
https://en.wikipedia.org/wiki/Ishmael_(novel)
so wait... the greatest evil mankind ever invented... what led to every war, most of the diseases, and all great human suffering... was agriculture?
yup.
If your into philosophy, I'd also add "The Principa Discordia" by Eris, and the "Illuminatus" trillogy by robert anton willson. (both gods)
For just raw fun... I really liked Gun Monkeys (best pacing of any book I ever read), Hard Magic by Corriea (co-creator of the sad puppies anti-hugo sci fi movement), God is a Bullet, and the entire Hairy Dresden series by Jim Butcher.
and now... operation mindfuck: