Ahistorian using the thinking skill of primary source analysis might:
a. attend a lecture about war
b. write a play about refugees who are fleeing a warzone
c. use a timeline to order battles in a war
d. interview civillians who are currently living in a warzone

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.