The correct answer is D) tobacco cultivation.
Tobacco cultivation was not something that Northwest Indians taught to the white settlers of the area.
The Native American Indians of the Northwest taught European people salmon fishing, clam digging, and architecture and construction techniques.
Cultivation of tobacco was introduced by John Rolfe, who had been in the Caribbean Island of Trinidad and brought some tobacco seeds from that place. He used the seeds in the Virginia territory and tobacco was a great success that was exported to Europe. This tobacco leaf was more grey and had a bitter flavor that European tobacco.
