"Republic of Ireland or Northern Ireland?"
Translation:Poblacht na hÉireann nó Tuaisceart Éireann?
The translation of “Ireland” into Irish depends upon how it’s used; the nominative form is Éire, the dative form is Éirinn, and the genitive form is Éireann. Most (but not all) genitive uses require the article, so in those cases it would be na hÉireann. This exercise has examples of the two genitive variations.
How does "na hÉireann" equate to "of Ireland"? I mean, why is the article plural? I have the same difficulty with "na Blarnan" meaning "of Blarney". I understand it's one of those linguistic oddities that the genitive needs an article, but I would have thought it would be "an Éireann".