This example displays a map of the USA using an Albers projection from D3’s geoAlbers API, with graticule lines drawn via geoGraticule. The landmasses are filled white against a teal sphere, while internal borders appear as blue strokes via topojson’s mesh. React manages the component state, loading TopoJSON data from a gist, and D3’s geoPath renders the SVG paths. The visualization also defines a graticule for reference, though it is not currently rendered in the final output.