This interactive map of India displays state and district boundaries using a Mercator projection, rendered as SVG paths with click-to-zoom transitions. The code loads TopoJSON data from a remote gist, converts it to GeoJSON features via `topojson.feature`, and visualizes it with `d3.geoMercator`, `d3.geoPath`, and the `d3.zoom` tool for animated scaling. Clicking a region triggers a smooth zoom to its bounding box and updates the displayed area, demonstrating dynamic map navigation with React and D3.