The whole premise of thanksgiving was built on genocide, torture, stealing land, enslavement, digging up sacred sites, cannibalism and rape.
There's the lovely story of cultures coming together and eating that's touted everywhere, then there's the real story where my people were murdered, and the rest frightened into being there. They didn't eat, they fasted.
The genocide carried on after the first thanksgiving as well (still carried on today actually if you've heard anything about the thousands of Indigenous children being dug up at schools they were forced to go to).
Even today people use it as a day to dress in our sacred dress, which is downright racist.
There's a lot more to the whole history of it, plenty of resources online nowadays, finally.
Its a day of mourning that has absolutely been whitewashed.
The thought of taking traditional British food to a thanksgiving dinner actually makes me feel sick.
Its not an ignorant question though, unless you have a reason to look at the history you'd never know.