A.Magna CartaB.political partiesC.James MeredithD.MaoriE.Roman C

A.Magna Carta
B.political parties
C.James Meredith
D.Maori
E.Roman Catholicism
F.tunnel
G.multiculturalism
H.George VI
I.regionalism
J. Edward VIII
K.referendum
L.Franklin D. Roosevelt

Since the conversion to Christianity, () has been Ireland's principal religion.
【正确答案】：E