The WTC belonged to the Port Authority -- an organization created by a compact between New York and New Jersey ( https://en.wikipedia.org/wiki/Port_Authority_o

The WTC belonged to the Port Authority -- an organization created by a compact between New York and New Jersey ( https://en.wikipedia.org/wiki/Port_Authority_of_New_York_and_New_Jersey https://en.wikipedia.org/wiki/Port_Authority_of_New_York_and... ) that handles most of the public transportation between the two states. The Trade Center itself was just an office building complex, with the Port Authority one of the biggest tenants ( https://en.wikipedia.org/wiki/World_Trade_Center_%281973%E2%80%932001%29 https://en.wikipedia.org/wiki/World_Trade_Center_%281973%E2%... ).