37.According to the passage, the explorers spent their first winter in what would become (A) North Dakota (B) Missouri (C) Montana (D) Idaho

35.According to the passage, the primary purpose of finding a water route across the continent was to (A) gain easy access to the gold and other riches of the Northwest (B) become acquainted with the inhabitants of the West. (C) investigate the possibility of improved farmland in the West. (D) facilitate the movement of commerce across the continent