<P> 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 . 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 . </P>
<P> 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 . 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 . </P>
when was sussex split into east and west
when was sussex split into east and west
1889
1889