Complex sentence: General Register Office, in England and Wales, Scotland, Ireland, and many Commonwealth nations, is the government agency responsible for civil registration-the recording of vital records such as births, deaths, and marriages.
Split into simpler sentences: General Register Office (GRO) is the name given to the civil registry in England and Wales, Scotland, many other Commonwealth nations and Ireland. As such, the GRO is the government agency responsible for the recording of vital records such as births, deaths, and marriages.