Question: A county in the East of England has one of the largest self-suffcient communities which posses 1500 acres of local land. What is this called?

full_context: Document 1: Middlesex: Middlesex ( , abbreviation: Middx) is a historic county in south-east England. It is now entirely within the wider urbanised area of London. Its area is now also mostly within the ceremonial county of Greater London, with small sections in other neighbouring ceremonial counties. It was established in the Anglo-Saxon system from the territory of the Middle Saxons, and existed as an official unit until 1965. The historic county includes land stretching north of the River Thames from 3 mi east to 17 mi west of the City of London with the rivers Colne and Lea and a ridge of hills as the other boundaries. The largely low-lying county, dominated by clay in its north and alluvium on gravel in its south, was the second smallest county by area in 1831.
Document 2: East of England: The East of England is one of nine official regions of England at the first level of NUTS for statistical purposes. It was created in 1994 and was adopted for statistics from 1999. It includes the ceremonial counties of Bedfordshire, Cambridgeshire, Essex, Hertfordshire, Norfolk and Suffolk. Essex has the highest population in the region.
Document 3: Combermere Abbey: Combermere Abbey is a former monastery, later a country house, near Burleydam, between Nantwich and Whitchurch in Cheshire, England, near the border with Shropshire. Initially Savigniac and later Cistercian, the abbey was founded in the 1130s by Hugh Malbank, Baron of Nantwich, and was also associated with Ranulf de Gernons, Earl of Chester. The abbey initially flourished, but by 1275 was sufficiently deeply in debt to be removed from the abbot's management. From that date until its dissolution in 1538, it was frequently in royal custody, and acquired a reputation for poor discipline and violent disputes with both lay people and other abbeys. It was the third largest monastic establishment in Cheshire, based on net income in 1535.
Document 4: Essex: Essex is a county in the East of England immediately north-east of London and is one of the home counties. It borders the counties of Suffolk and Cambridgeshire to the north, Hertfordshire to the west, Kent across the estuary of the River Thames to the south and London to the south-west. The county town is Chelmsford, which is the only city in the county.
Document 5: Anglican Cistercians: Anglican Cistercians are members of the Anglican Communion who live a common life together according to the Cistercian tradition. This tradition is usually dated to 1098 in origin. The term "Cistercian" is derived from "Cistercium," the Latin name for the village of Cîteaux, near Dijon in eastern France. It was in this village that a group of Benedictine monks from the monastery of Molesme founded Cîteaux Abbey in 1098, with the goal of following more closely the Rule of Saint Benedict. Monks following this Rule are known as Benedictine, and were at that time the dominant force in Christian monasticism. The monks of Cîteaux Abbey effectively founded a new order (the Cistercians), but one that remains closely associated with the Benedictine Order. As a mark of their distinctive charism and rule, Cistercian monks have long worn white habits, to distinguish themselves from Benedictine monks, who wear black habits. Within Anglicanism there has historically been less interest in the Cistercian Order than certain other monastic Rules, although Cistercian life has been represented continuously in the Church of England since at least 1966.
Document 6: Vauluisant Abbey: Vauluisant Abbey, near Courgenay in the canton of Brienon-sur-Armançon, Yonne, France, is a Cistercian abbey founded in 1127 by a group of monks from the abbey of Preuilly (Seine-et-Marne) who came to settle between the forest of Othe and the forest of Lancy, an area near the borders of Ile-de-France, Champagne and Burgundy that had come to be far from human habitation. They diverted the waters of the little River Alain and by 1 April 1129, works were far enough advanced for Henri Sanglier, the archbishop of Sens, to consecrate the modest oratory. By 1140 Vauluisant was fully operational. The abbey church was consecrated in 1149. In the second half of the 12th century, granges were established to cultivate abbey lands far from the abbey itself, at Beauvais, Toucheboeuf, Livanne, Cérilly, Armentières, worked by lay brothers who lived communally. Ironworks were established, fuelled by the dense woodlands, and tileworks, whose kilns were also fired by forest timber. The energetic Cistercians of Vauluisant produced more than the abbey needed; the surplus was sold in the market towns of Troyes and Provins, where the abbots retained domiciles, and at the cathedral town of Sens.
Document 7: St. Joseph's Abbey, Massachusetts: St. Joseph's Abbey is a monastery of the Catholic Order of Cistercians of the Strict Observance (O.C.S.O.), popularly known as the "Trappists," located in Spencer, Massachusetts. It is known for its production and marketing of Trappist Preserves, a line of jams and jellies, which partially supports the abbey. On December 10, 2013 the abbey was certified by the International Trappist Association to become the first Trappist brewery in the United States and the first outside Europe.
Document 8: Kent: Kent is a county in South East England and one of the home counties. It borders Greater London to the north west, Surrey to the west and East Sussex to the south west. The county also shares borders with Essex along the estuary of the River Thames, and with the French department of Pas-de-Calais along the English Channel. The county town is Maidstone.
Document 9: Stratford Langthorne Abbey: Stratford Langthorne Abbey, or the Abbey of St Mary's, Stratford Langthorne was a Cistercian monastery founded in 1135 at Stratford Langthorne — then Essex but now Stratford in the London Borough of Newham. The Abbey, also known as West Ham Abbey as it lay in that parish, was one of the largest Cistercian abbeys in England, possessing 1500 acre of local land, controlling over 20 manors throughout Essex. The Abbey was self-sufficient for its needs and wealthy besides; some of this wealth came from the ecclesiastic mills grinding wheat for local bakers to supply bread to the City of London. This later led to competition with the Guild of Bakers, who sought powers to levy a toll on loaves entering the City at Whitechapel.
Document 10: Essex County, Massachusetts: Essex County is a county in the northeastern part of the U.S. state of Massachusetts. As of the 2010 census, the total population was 743,159, making it the third-most populous county in Massachusetts. It is part of the Greater Boston area (the Boston–Cambridge–Newton, MA–NH Metropolitan Statistical Area). The largest city in Essex County is Lynn. The county was named after the English county of Essex.
Document 11: Essex, Ontario: Essex is a town with a population of 20,427 in Essex County in southwestern Ontario, Canada, whose municipal borders extend to Lake Erie. Essex is also the name of the largest community within the municipality. The present mayor is Ron McDermott. It is the county seat for Essex County.
Document 12: Sawtry Abbey: Sawtry Abbey was a Cistercian abbey located between Sawtry and Woodwalton in Cambridgeshire, England. The abbey was founded in 1147 by Simon II de Senlis, Earl of Northampton, who was the grandson of Earl Waltheof and Judith, the niece of William the Conqueror who held the manor when the Domesday Survey was compiled. It is the only Cistercian abbey in the county.
Document 13: Chelmsford: Chelmsford ( ) is the principal settlement of the City of Chelmsford and the county town of Essex, in the East of England. It is located in the London commuter belt, approximately 32 mi northeast of the notional centre of London at Charing Cross and approximately 22 mi from Colchester. The urban area of the city has a population of approximately 120,000, whilst the district has a population of 168,310.
Document 14: Sibton Abbey: Sibton Abbey, an early Cistercian abbey located near Yoxford, Suffolk, was founded about 1150 by William de Chesney, High Sheriff of Norfolk and Suffolk. A sister house of Warden Abbey, near Bedford, Bedfordshire, Sibton Abbey was the only Cistercian abbey in East Anglia.
Document 15: Leicester Abbey: The Abbey of Saint Mary de Pratis, more commonly known as Leicester Abbey, was an Augustinian religious house in the city of Leicester, in the English Midlands. The abbey was founded in the 12th century by the Robert de Beaumont, 2nd Earl of Leicester, and grew to become the wealthiest religious establishment within Leicestershire. Through patronage and donations the abbey gained the advowsons of countless churches throughout England, and acquired a considerable amount of land, and several manorial lordships. Leicester Abbey also maintained a cell (a small dependent daughter house) at Cockerham Priory, in Lancashire. The Abbey's prosperity was boosted though the passage of special privileges by both the English Kings and the Pope. These included an exemption from sending representatives to parliament and from paying tithe on certain land and livestock. Despite its privileges and sizeable landed estates, from the late 14th century the abbey began to suffer financially and was forced to lease out its estates. The worsening financial situation was exacerbated throughout the 15th century and early 16th century by a series of incompetent, corrupt and extravagant abbots. By 1535 the abbey's considerable income was exceeded by even more considerable debts.
ground_truth: The Abbey