Which of the following were true of the Northwestern tribes? (Select all that apply.) They were wood carvers, Society was divided into three classes: chiefs, freemen, and slaves, They valued wealth and status, They did not believe in slavery, They included the Chinook, Haida, and Nootka, They wore elaborate sandals and moccasins, They harpooned whales, Each nuclear family had its own house, Potlaches were great parties where the chief was given gifts by all his guests, They included the Tillamook, Tlingit, and Yurok.