Where is Manhattan Island NY?

Answer 1

Manhattan is one of the five boroughs of New York City, located mostly on Manhattan Island in the Hudson River estuary. Manhattan Island is near the westernmost point of Long Island, New York.

Manhattan Island is bounded on the north by the Harlem River, the west by the Hudson River, and on the east by the East River, which is a tidal strait linking the mouth of the Hudson with Long Island Sound to the NE.
Like how Glaciers made Long Island, Glaciers made the 5 boroughs. Manhata was made from deposition and erosion as well.