Answer:
I believe it may be A
Step-by-step explanation:
For this, I can tell you that the answers are NOT B, C, or E.
It is not B, because when the potato famine hit, that was one of the places that the Irish ran to. The US, Canada, and Great Britain.
It is not C, because for the small Irish farmers, their main food crop was potatoes. Without their main source of food, people starved. Starvation leads to death. About 750,000 died and about 2 million emigrated.
And, it is not E because that was one of the jobs the Irish females took over once they came to America. Matter of fact, this was one of the few jobs that women could take along with being servants and taking in laundry.
With the Irish coming to America, there would be tensions between the Americans and Irish. To some, the Irish were seen as taking over jobs from free blacks or from the poor. Also, the Irish weren't really let in for normal jobs because people would put up NINA signs (No Irish Need Apply). So this is why I would think it is not D.
The main expansion happened during 1848 and 1849 when the California Gold Rush came around. The Famine happened in 1845. The first ww expansion started in 1803 and the Oregon settlement was around the early 1830s and 1840s.
I hope this will help.
~Kicho [nm68]