Partition of Ireland
The partition of Ireland () divided the island of Ireland into two distinct jurisdictions, Northern Ireland and Southern Ireland. It took place on 3 May 1921 under the Government of Ireland Act 1920. Today the former is still known as Northern Ireland and forms part of the United Kingdom, while the latter is now a sovereign state also named Ireland and sometimes called the Republic of Ireland.
Devolution in the United Kingdom
The Northern Ireland Parliament was abolished by the Northern Ireland Constitution Act 1973, which received royal assent on 19 July 1973. A Northern Ireland Assembly was elected on 28 June 1973 and following the Sunningdale Agreement, a power-sharing Northern Ireland Executive was formed on 1 January 1974. This collapsed on 28 May 1974, due to the Ulster Workers' Council strike. The Troubles continued.