Which part of the Silk Road exposed travelers to the dangers listed below? • Lack of oxygen • Narrow passes • Steep cliffs • Snowstorms A. the Tigris River B. the Gobi Desert C. the Iranian Plateau D. the Pamir Mountains

Why were presidents andrew jackson and martin van buren unwilling to annex texas? a. they did not want texas to be admitted to the union as a slave state. b. they feared that the annexation of texas as a slave state would lead to political problems within the union. c. they thought that texas was too large to be admitted to the union as one state. d. they did not believe in the idea of manifest destiny.