A choropleth map renders Indian state boundaries in solid orange on a black background, filling the entire viewport. The visualization loads a TopoJSON file from a GitHub gist via `d3.json`, extracts its geometry collection, and converts it to GeoJSON features using TopoJSON’s `feature` function. React renders the map with `d3.geoMercator` and `d3.geoPath` to project and draw each polygon as an SVG path.