Question: What was the first  form of shopping precinct or shopping center, in which one or more buildings form a complex of shops representing merchandisers with interconnecting walkways that enable customers to walk from unit to unit in Brasília?
Context: The Clock Towers Shopping Centre is a shopping precinct in the town centre of Rugby, Warwickshire, England, managed by EFM Facilities Ltd.  The precinct includes clothes stores, game shops and thrift stores. This is a list of shopping malls in Bangladesh, sortable by name, location, year opened and size (gross floor area).  A shopping mall or shopping center is a building or set of buildings that contain retail units and a multiplex with interconnecting walkways enabling visitors to easily walk from unit to unit, offering diverse brands and utilities at the same place.  Bangladesh has some of the largest shopping malls in South Asia. A shopping mall is a modern, chiefly North American, term for a form of shopping precinct or shopping center, in which one or more buildings form a complex of shops representing merchandisers with interconnecting walkways that enable customers to walk from unit to unit.  A shopping arcade is a specific type of shopping precinct which is usually distinguished in english for mall shopping by the fact that connecting walkways are not owned by a single proprietor and are in open air.  Shopping malls in 2017 accounted for 8% of retailing space in the United States. The Grosvenor Shopping Centre (for a time known as "The Mall Grosvenor" or "The Mall Chester") is a large shopping precinct in Chester, England.  It hosts around 70 stores.  Whereas most of the central shopping area of Chester consists of historic streets, The Mall provides undercover shopping to complement the wide range of shops in other locations around the city.  It consists of some Edwardian buildings with modern covered shopping malls.  It was owned by The Mall Fund, and carried their corporate branding.  It was sold sometime in 2009 and the name Grosvenor Shopping Centre reinstated by the new owners. Asematunneli (Swedish: "Stationstunneln" ) is an underground shopping center connecting the Helsinki Central railway station and City-Center in downtown Helsinki, Finland.  The area also has a ticket sales area for the Rautatientori metro station and connections to the nearby Forum shopping mall as well as Stockmann and Sokos department stores.  The shops and supermarkets in Asematunneli are licensed to stay open longer than normal as well as during the national holidays, making the shopping center an important location for last minute and emergency shopping for the people of the greater Helsinki area.  Kamppi Center and the bottom floor of Sähkötalo across Fredrikinkatu can also be accessed via underground tunnels by going through the Forum shopping mall first.  The interconnecting areas provide for convenient movement across a wide area of central Helsinki, and allow pedestrians to escape the rain, snow, and cold weather that dominate much of the Finnish calendar. Bay Plaza Shopping Center is a shopping center on the south side of Co-op City, in the Bronx, New York.  In addition to various department stores and shops, such as Macy's, JCPenney, Staples, Kmart and Old Navy, it has a multiplex movie theater, several restaurants, a fitness club, and some office space.  It used to operate a Barnes and Nobles bookstore across the mall but was shut down.  Constructed from 1987 to 1988 by Prestige Properties, the shopping center is located between Bartow and Baychester Avenues, just outside Sections 4 and 5 of Co-op City, on an open lot that from 1960 to 1964, was the site of Freedomland USA.  The Bay Plaza Shopping Center is the largest shopping center in New York City.  Since opening over 25 years ago, it has become extremely successful, the center claims to hold some of the highest performing stores on a per-square-foot basis for many national retailers. The Shopping Conjunto Nacional (Joint National Mall), sometimes called by the CNB - Conjunto Nacional Brasília (Brasília Joint National), is the first "shopping center" in Brasília and the second mall to be built in Brazil, it was opened in 1971 and is one of the most traditional malls in the city.  Located near the Bus station in the Central Zone of Brasília, it is the largest mall in the Distrito Federal (Federal District) and is among the top 30 of Brazil, with 320 stores and 118,100 square meters built. Abercorn Common is a 180000 sqft shopping center in Savannah, Georgia.  The center was the first retail center in the U.S. to become LEED-certified, meaning its design incorporates efficiency with attractive buildings and public spaces.  The buildings and public spaces resemble Savannah's downtown historic district, with awnings, brick facades, fountains and brick-paved sidewalks.  Palm trees, pampas grasses and willow trees are among the natural features.  The shopping center dates back to the 1960s, when Abercorn Street was extended to form Abercorn Expressway.  At the time, it was one of the first establishments on Savannah's southside, and now it forms the primary shopping corridor of Savannah.  Located within several hundred feet are other major shopping centers, including: Oglethorpe Mall, Oglethorpe Plaza anchored by Best Buy and Kohl's, and Chatham Plaza anchored by World Market and Ross Dress For Less. Princesshay is a shopping precinct in the city of Exeter, Devon, England.  It was built in the early 1950s to replace buildings that had been severely damaged in the World War II Baedeker Blitz.  From 2005 the precinct and some surrounding buildings were demolished and rebuilt as a new shopping centre that opened in September 2007. This is a list of lists of shopping malls and shopping centers by country.  A shopping mall is one or more buildings forming a complex of shops representing merchandisers, with interconnecting walkways enabling visitors to walk from unit to unit.  Other establishments including movie theaters and restaurants are also often included.
Answer: The Shopping Conjunto Nacional