20230620 15051900 1.0 TRUE US USA - Generalized U.S. national boundaries dissolved from ESRI generalized county (or county equivalent) boundaries to improve draw performance and be used effectively at a national level. USA - Generalized represents the national boundary of the United States and the District of Columbia. U.S. Generalized are polygons containing dissolved national boundaries for identification on a map. Esri; U.S. Department of Commerce, Census Bureau; U.S. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS)