Manhattan is in the United States.
==== Smaller islands ====Within New York Harbor, there are three smaller islands:Ellis Island, shared with New JerseyGovernors IslandLiberty IslandOther smaller islands, in the East River, include (from north to south):Randalls and Wards Islands, joined by landfillMill RockRoosevelt IslandU Thant Island (legally Belmont Island)=== Geology ======= Bedrock ====The bedrock underlying much of Manhattan is a mica schist known as Manhattan schist of the Manhattan Prong physiographic region
  Manhattan has ten City Council members, the third largest contingent among the five boroughs

