Title: Geography of Sussex
Content:  Formerly a Saxon kingdom, Sussex was absorbed into Wessex, becoming a county in the later kingdom of England. From at least as long ago as the Norman Conquest, and possibly originating in the Romano-British period, or perhaps representing the shires of the kingdom of Sussex, Sussex was sub-divided into territories known as 'rapes', a sub-division unique to the county. From at least the 16th century, the three eastern rapes and three western rapes were informally grouped together as Sussex's eastern and western divisions. County councils were created for East and West Sussex in 1889. In 1974 the present-day district of Mid Sussex, (a large part of the rape of Lewes) was transferred from East Sussex to West Sussex and East and West Sussex were made into 
Title: West Sussex
Content:  the kingdom of Sussex, the later county of Sussex was traditionally divided into six units known as rapes. By the 16th century, the three western rapes were grouped together informally, having their own separate Quarter Sessions. These were administered by a separate county council from 1888, the county of Sussex being divided for administrative purposes into the administrative counties of East and West Sussex. In 1974, West Sussex was made a single ceremonial county with the coming into force of the Local Government Act 1972. At the same time a large part of the eastern rape of Lewes (the Mid Sussex district which includes the towns of Haywards Heath, Burgess Hill and East Grinstead) was transferred into West Sussex.
Title: History of local government in Sussex
Content:  the north of parish of Frant in the Rape of Pevensey became part of the Tunbridge Wells Local Government District. Together with several other counties (Cambridgeshire, Lincolnshire, Northamptonshire, Suffolk and Yorkshire) Sussex was for administrative purposes divided into an eastern division and a western division. An informal arrangement for several centuries, the division of Sussex for administrative purposes was formally confirmed through the County of Sussex Act 1865. In 1889 county councils were created for the eastern and western divisions and county boroughs were created as part of the Local Government Act 1888. The rapes of Arundel, Bramber and Chichester comprised Sussex's western division and the rapes of Lewes, Pevensey and Hastings comprised the eastern division, with 
Title: East Sussex
Content:  Sussex was historically sub-divided into six rapes. From the 12th century the three eastern rapes together and the three western rapes together had separate quarter sessions, with the county town of the three eastern rapes being Lewes. This situation was formalised by Parliament in 1865, and the two parts were made into administrative counties, each with it own elected county council in 1889 under the Local Government Act 1888. In East Sussex there were also three self-administered county boroughs: Brighton, Eastbourne and Hastings. Upon its foundation, East Sussex included the south of Tunbridge Wells and the south of Lamberhurst; by the Local Government Act 1894 these areas were transferred to Kent. In 1974 East Sussex was 
Title: Sussex
Content:  Local government in Sussex has been subject to periodic review over time and Sussex is currently divided two counties for ceremonial purposes and for administrative purposes into two county council areas, East and West Sussex, and one unitary authority, the city of Brighton and Hove. There is a two-tier structure for East Sussex and West Sussex with education, social services, libraries, public transport and waste disposal carried out by the county councils and local planning and building control carried out by the district and borough councils. For the governance of a long narrow territory it became practical to divide the county into two sections. The three eastern rapes of Sussex became east Sussex and the three western rapes became west Sussex. This began in 1504 with separate administrations (Quarter Sessions) for east and west, a situation recognised by the County of Sussex Act 1865. Under the Local Government Act 1888, the two divisions became two administrative counties (along with three county boroughs: Brighton, Hastings and, from 1911, Eastbourne).
Title: East Sussex County Council
Content:  Sussex was historically divided into six sub-divisions known as rapes. From the 12th century the three eastern rapes and the three western rapes had separate quarter sessions: the county town of the three eastern rapes was Lewes. This position was formalised by Parliament in 1865, and the two parts were made into administrative counties, each with distinct elected county councils, in 1889 under the Local Government Act 1888. Within East Sussex there were also three self-administered county boroughs: Brighton, Eastbourne and Hastings. In 1974 East Sussex was made a non-metropolitan county, and the three county boroughs became districts within the county. At the same time the western boundary was altered, so that the Mid Sussex area (including Burgess Hill and Haywards Heath) was transferred to the county of West Sussex. In 1997, Brighton and Hove became a self-administered unitary authority; it was granted city status in 2000, whilst remaining part of the ceremonial county of East Sussex.
Title: History of local government in Sussex
Content:  The history of local government in Sussex is unique and complex. Founded as a kingdom in the 5th century, Sussex was annexed by the kingdom of Wessex in the 9th century, which after further developments became the Kingdom of England. It currently corresponds to two counties, East Sussex and West Sussex. After the Reform Act 1832 Sussex was divided for purposes of administration into an eastern and a western division, these divisions were coterminous with the two archdeaconries of Chichester and Lewes and also the three eastern and three western county subdivisions respectively. In 1889, following the Local Government Act 1888, using those same 
Title: History of local government in Sussex
Content:  Sussex was divided into two administrative counties, East Sussex and West Sussex together with two self-governing county boroughs, Brighton and Hastings, later joined by Eastbourne. In 1974, under the Local Government Act 1972, the county boundaries were revised with the mid-Sussex area of East Grinstead, Haywards Heath, Burgess Hill and Hassocks being transferred from the administrative area of East Sussex into that of West Sussex, along with the Gatwick area that historically has been part of Surrey. The county boroughs were returned to the control of the two county councils but in 1997 the towns of Brighton and Hove were amalgamated as a unitary 
Title: History of Sussex
Content:  Sussex were made into the ceremonial counties of East and West Sussex in 1974. Boundaries were changed and a large part of the rape of Lewes was transferred from the eastern division into West Sussex, along with Gatwick Airport, which was historically part of the county of Surrey. The county boroughs were returned to the control of the two county councils but in 1997 the towns of Brighton and Hove were amalgamated as a unitary local authority and in 2000, Brighton and Hove was given City status. Although it is administered as the two ceremonial counties of East and West Sussex, 
Title: History of Sussex
Content:  help from the First Canadian Army. During the lead up to the D-Day landings, the people of Sussex were witness to the buildup of military personnel and materials, including the assembly of landing crafts and construction of Mulberry harbours off the county's coast. 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 original archdeaconries of Chichester and Lewes. In 1889, following the Local Government Act 1888, using those same 

Question: when did sussex split into east and west?
Answer: 1832.
1889.