The Government of Ireland Act of 1920 created two self-governing regions within Ireland: Northern Ireland and Southern Ireland. Northern Ireland had its own parliament (the Parliament of Northern Ireland) and government. This was a significant change from the previous system, in which Ireland was governed directly from London.
Home Rule had a profound impact on Northern Ireland. It gave the region a greater degree of autonomy and allowed it to develop its own policies and institutions. This led to a number of changes, including:
* The creation of a new police force, the Royal Ulster Constabulary (RUC).
* The establishment of a new education system, based on the British model.
* The introduction of social welfare programs, such as unemployment benefits and public housing.
These changes had a positive impact on many people in Northern Ireland, but they also led to tensions between Catholics and Protestants. Catholics felt that they were discriminated against by the Protestant-dominated government, and this eventually led to the outbreak of the Troubles in 1969.
Home Rule was suspended in 1972 after the outbreak of the Troubles. Direct rule from London was then imposed, and this lasted until 1998. The Good Friday Agreement of 1998 restored devolved government to Northern Ireland, but it also created a new power-sharing arrangement between Protestants and Catholics. This has helped to reduce tensions between the two communities, and it has led to a period of relative peace and stability in Northern Ireland.