1916    Easter Rebellion: Martial law in Ireland is lifted and the rebellion is officially over with the surrender of Irish nationalists to British authorities in Dublin.

1916    The Irish Nationalist and British diplomat Sir Roger Casement is sentenced to death for his part in the Easter Rising.

1971    Internment in Northern Ireland: British security forces arrest hundreds of nationalists and detain them without trial in Long Kesh prison. Twenty people die in the riots that follow.

1973    Elections are held for the Northern Ireland Assembly, which will lead to power-sharing between unionists and nationalists in Northern Ireland for the first time.