Complex sentence: Limerick Archives (formerly Limerick Regional Archives/Limerick City Archives) is part of Limerick City and County Council it is responsible for the collection and preservation of archival material relating to Limerick city and makes these archives freely available to the public.
Split into simpler sentences: Limerick Archives (formerly Limerick Regional Archives/Limerick City Archives) is part of Limerick City and County Council. Its purpose is to collect and preserve archival material relating to Limerick city, and to make these archives freely available to the public.