Is it ensure, insure, or assure?
main island of New York City, from Dutch, from a native name, perhaps representing a Delaware (Algonquian) source akin to Munsee munahan "island." Bright favors Munsee /e:nta menahahte:nk/ "where one gathers bows." As the name of a cocktail made of vermouth, whiskey, and a dash of bitters, it is attested from 1890 (in Manhattan cocktail).
Note: Center of the country's financial industry (see Wall Street), communications industry, including advertising and television (see Madison Avenue), and fashion industry (see Fifth Avenue).
Note: A center of the art world (see Greenwich Village).
Note: Because of its noise and congestion, some have viewed it as unlivable, giving rise to the phrase "It's a nice place to visit, but I wouldn't want to live there." In the 1990s, it experienced prosperity and a decline in crime rates.
Note: The September 11 attacks left a physical and emotional scar on Manhattan.