How did the Irish potato famine of the 1840s and mass emigrations affect the social conditions in eastern U. S. cities? A. The immigrants were unable to find jobs and moved inland to start businesses in small towns. B. The Irish majority soon dominated local politics in cities like New York and Boston.
C. The high immigrant population in cities like New York and Boston led to poverty and disease.
D. The Irish immigrants quickly became wealthy and were accepted by native-born Americans.