Isn't Oklahoma represented by several different indian tribes, hispanics, japanese/vietnamese (from the 80's) and of course the blacks who left the south?
Sounds more like her husband pressured them in to it. Nice to be back home ain't it?
There are other tribes in Oklahoma, but think the five civilized tribes, which were forced to relocate to the Indian Nations as it was called. Choctaw, Seminole, Cherokee, Chickasaw and Creek. I don't think any of these even have reservations now in OK, but all have (and still do today) contributed greatly to the state.