Technically it is not. The city of New York encompasses 3 Islands (Including Long Island, the largest island in America) and only a small peninsula that is actually on the Mainland proper. The result is that about 90% of New York City is not on the American mainland/continent.
More than 16% of America is not part of the contiguous land mass. It doesn't make it any less part of america.
It’s only America if it’s from the ‘America’ region of the subcontinent, otherwise it’s just sparkling south Canada
