when was sussex split into east and west
History of Sussex Since its creation in the fifth century, Sussex has been subject to periodic reform of its local governance. After the Reform Act of 1832 Sussex was divided into the eastern division and the western division, these divisions were coterminous with the two archdeaconries of Chichester and Lewes.[48] In 1889, following the Local Government Act 1888, using those same boundaries, Sussex was divided into two administrative counties, East Sussex and West Sussex together with three self-governing county boroughs, Brighton, Eastbourne and Hastings.