New York City is a major city because 8,537,673 people live there as of 2016. New York is a center for books and magazines, broadcasting, and the clothing industry. It also has a port where goods come in from all over the world.
The main reason is very simple -- almost comically simple, actually. The reason is that New York has a great harbor. The sea floor under New York Harbor is very steep; the shallow, sandy bottom drops off into deep, deep water very quickly. This makes it a very safe, very ideal harbor for trading ships to dock at. This easy access for trade ships is one of the main reasons New York City has arguably become the financial capital of the world.
I'm not sure what "the major city" that you're referring to is. But New York City is not part of any other city.
Its a borough of New York City
The city of New York, located in the southern part of New York State, is the most populated.
New York City is a part of New York State.
The Statue of Liberty is located on Liberty Island which is in NY Harbor and is officially part of New York City.
Times Square
New York City is the most populous city in the Northeast area of the United States. Other major cities include Boston, Philadelphia, Washington, Baltimore and Newark.
New York City.
This city has a part in Ontario, Canada and the other part in New York, US.
There is no Asbury Park, New York. Asbury Park is a city in New Jersey. It is part of the New York City metropolitan area, though.
New York City's five boroughs were united under the charter of "Greater New York" on May 4, 1897. See the related link.
New York City is a part of New York State, which is number 11 of the 50 States of the United States of America.
NEW YORK