This visualization displays a choropleth map of India, using two TopoJSON datasets for district and state boundaries. The map is rendered with SVG paths using the `d3.geoPath` and `d3.geoMercator` projection, with districts colored by a categorical scale via `scaleOrdinal` and `schemeCategory10`. Hovering over a district turns it dark green. The state boundaries are overlaid as a separate layer with black strokes, and the map includes zoom functionality.