ojibwe

Despite being perhaps the most iconic Native Americans of the Great Plains, the Sioux were not originally from there. They were originally Eastern Woodlands natives who lived along the Upper Mississippi before being driven west by the Ojibwe, their traditional enemies who had recently obtained a...

https://en.m.wikipedia.org/wiki/Wild_rice Could a succesful civilisation form around wild rice agriculture? It was (and still is) a common food source for groups like the Ojibwe and is now grown as a food source in North America. What other plants could this civilisation grow? Bulrush?