Dans quel domaine
la coopération se noue-t-elle ?
c'est en histoire ​

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.

The social difference that caused sectionalism in the antebellum era would be c.)  north was disorganized. the north had slow population growth, where as the south had mass immigration.hope this really mark