Complex sentence: The corporation of the city of Cashel existed, as the local government of its area, until it was abolished by the Municipal Corporations (Ireland) Act 1840, but the parliamentary borough was not affected by this change in administrative arrangements.
Split into simpler sentences: The corporation of the city of Cashel existed, as the local government of its area, until it was abolished by the Municipal Corporations (Ireland) Act 1840. The parliamentary borough was not affected by this change in administrative arrangements.