Large numbers of Irish immigrants came to the United States in the 1840s because of the?:
Apersecution of Irish Catholics in the rest of Europe.
Bmassive failure of the potato crop in Ireland.
Clure of gold in California.
Dcivil war between North Ireland and the rest of the country.
EBritish military aggression in Ireland.
Apersecution of Irish Catholics in the rest of Europe.
Bmassive failure of the potato crop in Ireland.
Clure of gold in California.
Dcivil war between North Ireland and the rest of the country.
EBritish military aggression in Ireland.