Question: What year did the shopping center the B46 bus route runs north of open?

Context paragraphs:
Eighth Avenue Line (Manhattan surface): The Eighth Avenue Line is a public transit line in Manhattan, New York City, United States, running mostly along Eighth Avenue from Lower Manhattan to Harlem.  Originally a streetcar line, it is now the M10 bus route and the M20 bus route, operated by the New York City Transit Authority.  The M10 bus now only runs north of 57th Street (near Columbus Circle), and the M20 runs south of 65th Street.  The whole line was a single route, the M10, until 1999 when the M20 was created.

Maryland Route 5: Maryland Route 5 (MD 5) is a 74.34 mi long state highway that runs north–south in the U.S. state of Maryland.  The highway runs from Point Lookout in St. Mary's County north to the Washington, D.C. border in Suitland, Prince George's County.  MD 5 begins as the two-lane undivided Point Lookout Road which runs from Point Lookout, St. Mary's County, to an intersection with MD 235 in the northern part of the county.  Point Lookout Road passes through rural areas as well as the county seat of Leonardtown.  After the MD 235 intersection, the route becomes the four-lane divided Three Notch Road and continues into Charles County, where it becomes Leonardtown Road.  Here, the route bypasses Hughesville and continues north toward the Waldorf area, which it bypasses to the east on Mattawoman Beantown Road.  The route merges onto U.S. Route 301 (US 301, Crain Highway) and enters Prince George's County, splitting from US 301 at an interchange in Brandywine.  From here, MD 5 continues north on Branch Avenue, running through suburban areas, before becoming a freeway as it passes Andrews Air Force Base and interchanges with Interstate 95 (I-95)/I-495 (Capital Beltway).  Past the Capital Beltway, the route runs through suburban areas of Hillcrest Heights and Suitland before reaching the D.C. border, where Branch Avenue continues, crossing Pennsylvania Avenue and eventually terminating at Randle Circle.

Q65 (New York City bus): The Q65 bus route constitutes a public transit line in Queens, New York City, United States.  The south-to-north route runs primarily on 164th Street, operating between two major bus-subway hubs: Sutphin Boulevard – Archer Avenue/Jamaica and Flushing–Main Street.  It then extends north along College Point Boulevard to College Point at the north end of the borough.  The route is city-operated under the MTA Bus Company brand of MTA Regional Bus Operations.

Washington City Transit: "Freedom Transit (formerly 'Washington City Transit')" is the designation for the public transit agency providing bus services in the urbanized portion of central and northern Washington County, Pennsylvania.  Local "Hopper" bus routes are designed to serve Washington, Pennsylvania, an edge city and a key location of both business parks and shopping amenities.  The fourth route, the "Metro" bus route, is the centerpiece of the system, providing access from the Washington County suburbs to Downtown Pittsburgh.  The Metro bus route makes stops in Washington, Houston and Canonsburg, serving central and northern Washington County, traveling ten times per weekday in each direction to Downtown Pittsburgh.  The Metro service also stops at designated park and ride locations.  More limited bus service is offered on Saturdays, with service to the South Hills "T" Transit Center.

Arkansas Highway 127: Highway 127 (AR 127, Ark. 127, and Hwy.  127) is a designation for four state highways in Northwest Arkansas.  One route of 4.13 mi begins at Madison County Road 3345 (CR 3345) and runs northwest to Highway 23 at Aurora.  A second route of 4.86 mi begins at US Highway 412 (US 412) at Old Alabam and runs north to Highway 23 at Forum.  A third route of 8.58 mi begins at Highway 12 and runs north to Highway 12 near Clifty.  A fourth route of 5.82 mi begins at Lost Bridge Village and runs north to US Highway 62 in Garfield.  Highway 127 Spur is a spur route of 0.25 mi near the southern terminus of the Lost Bridge Village route that provides access to Lost Bridge Marina.  All routes are maintained by the Arkansas State Highway and Transportation Department (AHTD).

Third and Lexington Avenues Line: The Third and Amsterdam Avenues Line, also known as the Third Avenue Line, is a public transit line in Manhattan, New York City, United States, running from Lower Manhattan to Fort George in Washington Heights.  Originally a streetcar line, it now consists of the M98, M101, M102, and M103 bus routes, operated by the New York City Transit Authority.  The M98 bus route operates on Third Avenue between East 65th Street and East 127th Street, but formerly went to 32nd Street.  The M101-M103 bus route runs southbound on Lexington Avenue north of East 24th Street.

KMB Route 1A: KMB Route 1A is a bus route operated by Kowloon Motor Bus (KMB) in Hong Kong.  It runs between Star Ferry and Sau Mau Ping (Central) and provides air-conditioned service.  The route runs via Tsim Sha Tsui, Yau Ma Tei, Mong Kok, Kowloon City, San Po Kong, Ngau Tau Kok, Kwun Tong, and Sau Mau Ping.

Kings Plaza: Kings Plaza Shopping Center is a shopping center within the Marine Park/Mill Basin section of Brooklyn, New York City, near the Flatlands and Bergen Beach neighborhoods.  Opened in September 1970, it is located at the southeast corner of Flatbush Avenue and Avenue U, just north of Floyd Bennett Field.  The mall is anchored by Macy's, Best Buy, H&M, and Old Navy, and formerly by Sears.

Utica and Reid Avenues Line: The B46 bus route constitutes a public transit corridor in Brooklyn, New York City, United States.  The route runs primarily along Utica Avenue north from the Kings Plaza shopping center through Eastern Brooklyn, with continued service west along Broadway to the Williamsburg Bridge Plaza Bus Terminal.  The corridor was originally served by a streetcar line, known as the Utica and Reid Avenues Line, Utica−Reid Line, Reid−Utica Line, Reid Avenue Line, or Utica Avenue Line until 1951, when the line was replaced by bus service.  The bus route is operated by MTA Regional Bus Operations under the New York City Transit brand.

Q64, QM4 and QM44 buses: The Q64, QM4 and QM44 bus routes constitute a public transit line in Queens, New York City, United States.  The east-to-west Q64 route runs primarily on Jewel Avenue operating between the Forest Hills – 71st Avenue subway station in Forest Hills and 164th Street in Electchester.  The QM4 route is an express bus route running from Midtown Manhattan to Electchester running via Sixth Avenue in Manhattan and Jewel Avenue in Queens.  The QM44 route is an express bus route running from Midtown Manhattan to Electchester running via Third Avenue in Manhattan and Jewel Avenue in Queens.

Supporting paragraphs: Utica and Reid Avenues Line Kings Plaza
Answer: 1970