Question: When was the territory covered by RIBA's Cambridge branch office created?

full_context: Document 1: Countries of the United Kingdom by population: The population of the countries and regions of the United Kingdom was last measured by census in 2011. and the Census organisations have produced population estimates for subsequent years by updating the census results with estimates of births, deaths and migration in each year. The census results, and the annual population estimates, summarised below show that England is by far the most populous country of the United Kingdom and its population is therefore also presented by region.
Document 2: Royal Institute of British Architects: The British Architectural Library, sometimes referred to as the RIBA Library, was established in 1834 upon the founding of the institute with donations from members. Now, with over four million items, it is one of the three largest architectural libraries in the world and the largest in Europe. Some items from the collections are on permanent display at the Victoria and Albert Museum (V&A) in the V&A + RIBA Architecture Gallery and included in temporary exhibitions at the RIBA and across Europe and North America. Its collections include:
Document 3: East Africa: East Africa or Eastern Africa is the easterly region of the African continent, variably defined by geography or geopolitics. In the United Nations Statistics Division scheme of geographic regions, 20 territories constitute Eastern Africa:
Document 4: Royal Institute of British Architects: RIBA is based at 66 Portland Place, London—a 1930s Grade II* listed building designed by architect George Grey Wornum with sculptures by Edward Bainbridge Copnall and James Woodford. Parts of the London building are open to the public, including the Library. It has a large architectural bookshop, a café, restaurant and lecture theatres. Rooms are hired out for events.
Document 5: Hertfordshire: Hertfordshire is the county immediately north of London and is part of the East of England region, a mainly statistical unit. A significant minority of the population across all districts are City of London commuters. To the east is Essex, to the west is Buckinghamshire and to the north are Bedfordshire and Cambridgeshire.
Document 6: Royal Institute of British Architects: Its services include RIBA Insight, RIBA Appointments, and RIBA Publishing. It publishes the RIBA Product Selector and RIBA Journal. In Newcastle is the NBS, the National Building Specification, which has 130 staff and deals with the building regulations and the Construction Information Service. RIBA Bookshops, which operates online and at 66 Portland Place, is also part of RIBA Enterprises.
Document 7: 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 8: Regions of England: Region Statistical regions Administrative region (1) Location England Created Number 9 Additional status NUTS 1 region European constituency Populations 2,596,886 -- 8,634,750 Areas 1,572 -- 23,829 km2 Government Local authority leaders' board (6) Elected assembly (1) None (2) Subdivisions Non-metropolitan county (8) Metropolitan county (4) Districts of London (1)
Document 9: Royal Institute of British Architects: RIBA Enterprises is the commercial arm of RIBA, with a registered office in Newcastle upon Tyne, a base at 15 Bonhill Street in London, and an office in Newark. It employs over 250 staff, approximately 180 of whom are based in Newcastle.
Document 10: Royal Institute of British Architects: The Royal Institute of British Architects (RIBA) is a professional body for architects primarily in the United Kingdom, but also internationally, founded for the advancement of architecture under its charter granted in 1837 and Supplemental Charter granted in 1971.
Document 11: North Region, Singapore: The North Region of Singapore is one of the five regions in the city-state. The region is the second largest region in terms of land area, and has a population of 531,860. Woodlands is the regional centre and also the most populous town with 250,290 residents living in the area. Comprising 13,500 hectares of land area, it includes eight planning areas.
Document 12: Royal Institute of British Architects: The Institute also maintains a dozen regional offices around the United Kingdom, it opened its first regional office for the East of England at Cambridge in 1966.
Document 13: Northeast India: The states of North Eastern Region are officially recognised under the North Eastern Council (NEC), constituted in 1971 as the acting agency for the development of the north eastern states. Long after induction of NEC, Sikkim formed part of the North Eastern Region as the eighth state in 2002. India's Look - East connectivity projects connect Northeast India to China and ASEAN.
Document 14: Royal Institute of British Architects: RIBA Visiting Boards continue to assess courses for exemption from the RIBA's examinations in architecture. Under arrangements made in 2011 the validation criteria are jointly held by the RIBA and the Architects Registration Board, but unlike the ARB, the RIBA also validates courses outside the UK.
Document 15: Royal Institute of British Architects: After the grant of the royal charter it had become known as the Royal Institute of British Architects in London, eventually dropping the reference to London in 1892. In 1934, it moved to its current headquarters on Portland Place, with the building being opened by King George V and Queen Mary.
ground_truth: 1994
sub_queries: What territory did RIBA's Cambridge branch office cover? Answer: the East of England
When was the East of England birthed? Answer: 1994