This visualization displays a map of United States states using an Albers projection, rendered as simple outlined polygons against a graticule grid. The code fetches TopoJSON data from the us-atlas package and converts it to GeoJSON using `topojson.feature`. It draws the map with `d3.geoPath`, also rendering the graticule and its outline via `geoGraticule`. The map appears once data finishes loading, with states shown as white-bordered paths on a plain background.