The massive nineteenth-century influx of Irish immigrants into the United States was accompanied by:

A) The passage of restrictive immigration laws
B) Legislation lengthening residency requirements for citizenship
C) The growth of anti-Catholic sentiment
D) A nationwide typhoid fever epidemic

Irish Immigrants

Individuals from Ireland who migrated to another country, especially to the United States during the 19th and early 20th centuries, often due to famine, economic hardships, and political unrest.

Anti-Catholic Sentiment

Prejudice or hostility towards Catholics or the Catholic Church, often stemming from political, religious, or cultural conflicts.

Restrictive Immigration Laws

Laws designed to limit or control the flow of immigrants into a country, often based on quotas, nationality, or other criteria.