Following the Irish War of independence and the subsequent Anglo-Irish Treaty, Ireland gained independence from the United Kingdom in 1922.

爱尔兰自力战斗以及随后的《英爱合同》签订之后，爱尔兰于1922年离开结合王国获得自力。

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Fianna Fail and Fine Gael emerged following a split in nationalist opinion over the 1921 Anglo-Irish Treaty.

BBC: The Dail

Collins negotiated and signed the Anglo-Irish treaty in 1921, allowing six counties in the North to remain with Britain, as Northern Ireland.

BBC: The IRA's history of splits

With Cillian Murphy as a refined young rebel who wants complete separation from Great Britain and a socialist revolution in Ireland, and Padraic Delaney as his rough-hewn brother, who is willing to accept the Anglo-Irish Treaty of 1921.

NEWYORKER: The Wind That Shakes the Barley