Answer:
I'm sure it's (b) ✌hope this helped ya out
Islamic terrorism, or Radical Islamic terrorism, is defined as any terrorist act, set of acts or campaign committed by groups or individuals who profess Islamic or Islamist motivations or goals.[1] Islamic terrorists justify their violent tactics through interpreting the Quran and Hadith according to their own goals and intentions.
How individuals react a fourth of a century later
Political - British taking over Northern Ireland.
The majority of Northern Ireland's population were unionists, who wanted to remain within the United Kingdom. (The Norman invasion of the late 12th century )
Economic - Failure of potato crop. (The Great Famine)
Religious - discrimination against the Catholic/nationalist minority by the Protestant/unionist government and police force.
Answer : Mainly because economic problems. Since potatoes were no longer available in Ireland, the Irish would starve to death since potatoes were their main resource as food.
This brings to Irish migration to the US because it offered low paying jobs for immigrants. In the end, the Irish had minimum money and enough food for themselves in America, unlike in Ireland.
Producers to supply less and consumers to buy less