This choropleth displays the 50 U.S. states with land areas filled in green and white state borders, highlighting a state in orange on hover. It uses React and D3 v5’s `geoPath` with the `geoAlbersUsaTerritories` projection to render geographic features as SVG, pulled from TopoJSON data in the US Atlas (`states-10m.json`). The `feature` and `mesh` functions from TopoJSON extract land polygons and interior boundaries, which are styled via CSS.