Question 6 in the film, "the difference between us: race: the power of an illusion," we learned that othere can be accumulations of genes (ie, like the gene forms that regulate skin color or alter the shape of red blood cells) in one place in the globe and not another o race is a social and historical idea human populations have not been isolated from each other long enough to evolve into separate subspecies all of the above

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.