Answer:C. Because of its remoteness, there was much slower population growth in this region than the national averages in U.S. and Canada.
Explanation:
Based on the lectures, the correct options are:
• The U.S.-Canadian border was set by agreement at 49* N latitude
• The Modoc and Klamath native peoples inhabited Oregon while the Palouse and Yakima tribes inhabited Washington.
• Most of the region’s population lives in the lowlands from the Fraser River in Canada to the Willamette Valley in Washington.
• The first railroad to Seattle stimulated large numbers of immigrants, especially Scandinavians, into Washington.
Therefore, option C is the answer.