Which of the following is a PULL factor that caused Irish immigrants come to the United States?

A. the overpopulation of Ireland
B. the promise of jobs in American factories
C. the lack of employment opportunities in Ireland
D. the development of steamship travel across the Atlantic Ocean

Locate an article online from a news source that illustrates at least one determinant of supply. write a summary of the article, list the determinant(s) that were discussed in the article, and give a brief explaination of the effect of the determinant(s). you don't need to write the entire thing out, just find a source and tell me what i should include. i'm not the best at some parts of economics, and this is one of the parts i suck at.