canadian aboriginals

During the Revolutionary War, the Native American tribes of what in our timeline, became the Eastern United States, Ontario and Quebec, were largely split in their support for the British or the Americans. The Iroquois were the only ones who had any kind of support for the Crown among its...

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?