100 points
the most difficult part of laying the tracks for the transcontinental rail line probably was

a. crossing the rocky mountains and sierra nevada

b. crossing the great plains.

c. crossing the appalachian mountains.

d. crossing the ohio and mississippi rivers.

Lomexico, central america, and the caribbean: mastery testselect the correct answer.which of the following was the leading cause of death among native americans after the arrival of europeans? a.conquistadorsb.diseasec.starvationd. warreset

Which of the following statements does not describe shi huangdi? a. shi huangdi was the first emperor of the qin dynasty. b. shihuangdi wrote the lunyu, the most important text in confucianism. c. shihuangdi conquered city-states to unite china. d. shihuangdi began the process of building the great wall of china.

Which jewish festival was celebrated every month?