This interactive visualization displays a choropleth-style map of the United States, rendered as an SVG using React and D3 v5. The map shows state boundaries through purple interior lines, with land areas filled in green against a dark blue sphere background. The code employs `d3.geoAlbers` for the Albers equal-area projection, `d3.geoPath` to generate SVG paths, and `d3.geoGraticule` for grid lines. Geographic data comes from the `us-atlas` TopoJSON file, processed through `feature` and `mesh` from topojson library.