Complex sentence: The town is located in the unitary authority of Gwynedd which was formed in 1996, from 1974 to 1996 it was in the Meirionydd District of the 1974 County of Gwynedd, and before 1974 it was in the historic county of Merionethshire.
Split into simpler sentences: The town is in the unitary authority of Gwynedd which was formed in 1996. From 1974 to 1996 it was in the Meirionydd District of the 1974 County of Gwynedd, and before 1974 it was in the historic county of Merionethshire.