This map will show you the Indigenous territories, treaties, and languages for a given location: https://native-land.ca
I live on the ancestral lands of the Bodwéwadmi (Potawatomi),
Očhéthi Šakówiŋ, Kiikaapoi (Kickapoo), Hoocąk (Ho-Chunk), Myaamia, and Peoria nations.
Native-Land.ca | Our home on native land

Native Land is a resource to learn more about Indigenous territories, languages, lands, and ways of life. We welcome you to our site.

The land was ceded to the United States as part of the 1833 Treaty of Chicago (https://en.wikipedia.org/wiki/1833_Treaty_of_Chicago). That Wikipedia article, as well as the article on the Indian Removal Act of 1830 (https://en.wikipedia.org/wiki/Indian_Removal_Act) are good readings for today in particular.
1833 Treaty of Chicago - Wikipedia

@duncandahusky They have this as an app as well. It's interesting.
@duncandahusky What an amazing resource that website is!