UK – United Kingdom of Great Britain and Northern Island
The partition of Ireland (Irish: cr├нochdheighilt na h├Йireann) was the process by which the Government of the United Kingdom of Great Britain and Ireland divided Ireland into two self-governing polities: Northern Ireland and Southern Ireland. It took place on 3 May 1921 under the Government of Ireland Act 1920. The Act intended for both home rule territories to remain within the United Kingdom and contained provisions for their…