Answer:
Both groups of immigrants were coming from less prosperous countries in the search of a better life for themselves and their families.
<span>The French and Indian War changed the relationship between the British and the colonists. As a result of this war, the British got most of France's land east of the Mississippi River. ... The colonists wanted to go west to settle in the land Britain got from France. However, the Native Americans were threatening violence.</span>
One of the main ways in which changes to the railroad helped American industries to grow is that the expansion of the rail system led to increased migration to the west, which led to more farming and agricultural output. Another would be that it led to settlements that ultimately led to business that were able to conduct business over state lines with great ease.