This map of the United States uses a centered Albers projection, colored land and interior state boundaries against a graticule-filled sphere. The visualization is built with React, using D3's `geoAlbers`, `geoPath`, and `geoGraticule` functions to render the SVG paths. Topological data is loaded from the `us-atlas` package, and the `topojson` library's `feature` and `mesh` functions extract the nation and state-boundary geometries for display.