Did native Americans in the American Northwest grow enough crops to trade with tribes in the plains?

It is not true that Native Americans in the American Northwest grew enough crops to trade with tribes in the Plains. The tribes in the Northwest did not practice agriculture extensively, and instead, generally survived from hunting and gathering, relying particularly on salmon.

Explanation:

yes they did cuz they were also tradeing with the english for guns and furs so they were also trading with the other natives

i think it is the byzantine empire

demand is the need and oportunity to buy a given good or service.