单项选择题
A.a policy of protectionism
B.a policy of containment
C.a policy of military alliance
D.a policy of neutrality and nonalignment
单项选择题 On Easter Monday,April 18,1949,Eire became the Republic of Ireland,formally free of allegiance to the British crown and no longer a member of（）.
单项选择题 The creation of Northern Ireland dates from（）.when the Irish Free State was set up.
单项选择题 Irish nationalism climaxed in（）.in which an Irish Republic was proclaimed.