Question: when was the new york world trade center built

title: Construction of the World Trade Center
text: Construction of the World Trade Center 's North Tower began in August 1968 , and the South Tower in 1969 . Extensive use of prefabricated components helped to speed up the construction process . The first tenants moved into the North Tower in December 1970 and into the South Tower in January 1972 . Four other low - level buildings were constructed as part of the World Trade Center in the early 1970s , and the complex was mostly complete by 1973 . A seventh building , 7 World Trade Center , was opened in 1987 . 

Answer: answer: Construction of the World Trade Center's North Tower began in August 1968, and the South Tower in 1969. The first tenants moved into the North Tower in December 1970 and into the South Tower in January 1972. The complex was mostly complete by 1973. A seventh building, 7 World Trade Center, was opened in 1987.
answer: Construction of the World Trade Center's North Tower began in August 1968, and the South Tower in 1969.  Four other low - level buildings were constructed as part of the World Trade Center in the early 1970s , and the complex was mostly complete by 1973. A seventh building , 7 World Trade Center , was opened in 1987 .