1921 Government of Ireland Act

The 1921 Government of Ireland Act was an British law that aimed to provide home rule for Ireland by establishing two separate jurisdictions—Northern Ireland and Southern Ireland—each with its own government and parliament. It was intended to address Irish demands for self-governance, but Northern Ireland accepted it and remained part of the UK, while Southern Ireland rejected it. Consequently, the act created limited self-administration in the north, but it was largely ineffective in the south, leading to unrest and the Irish War of Independence. The act was eventually superseded by the Anglo-Irish Treaty of 1921, which established the Irish Free State.