What was the purpose of the transcontinental railroad?

In keeping their culture unchanged what do canadians fear the most?

Which of these is an edge city? boston, ma chicago, il irvine, ca detroit, mi

Why was the united states motivated to establish the open door policy? a. the policy guaranteed american commerce with china. b. the policy supported the chinese nationalist cause. c. the policy led to a gain of american colonies in asia. d. the policy claimed damages from the chinese.