This example displays a choropleth map of India, rendered as SVG paths using the Mercator projection. The map visualizes the country’s regions with categorical colors from `d3.scaleOrdinal` and `schemeCategory10`, and each region shows a tooltip title on hover. The code loads TopoJSON data from a GitHub gist via `d3.json`, parses it with `feature` from the topojson library, and draws paths using `d3.geoPath`. Hovering changes the fill color to pink, and the map includes a heading text layer.