Irish War of Independence by regulation for those areas where IRA activity was prevalent. On 10 December 1920, martial law was proclaimed in Counties Cork, Kerry, Limerick and Tipperary in Munster; in January 1921 martial law was extended to the rest of Munster in Counties Clare and Waterford, as well as Counties Kilkenny and Wexford in Leinster. It also suspended all coroners' courts because of the large number of warrants served on members of the British forces and replaced them with "military courts of enquiry". The powers of military courts-martial were extended to cover the whole population and were empowered to use the death
Local Government (Ireland) Act 1898 of the Irish Free State and Northern Ireland. The Act caused a number of county boundaries to be modified. This was for several reasons: The extents of the new administrative counties and county boroughs, which came into effect on 18 April 1899, were defined by orders of the Local Government Board for Ireland. There were no changes to the boundaries of the counties of Cavan, Cork, Donegal, Fermanagh, Kerry, Kildare, King's (Offaly), Leitrim, Limerick, Longford, Meath, Monaghan, and Tyrone; nor to those of the county boroughs (previously counties corporate) of Cork, Dublin, Limerick, and Waterford. Changes elsewhere were as follows: