This interactive map of India allows users to click on states to zoom in and display their districts. It uses React for the interface and the D3 library’s `geoMercator` and `geoPath` to render the geographic boundaries as SVG polygons. The map is built from TopoJSON data for both state and district boundaries, and a custom D3 zoom transform animates the transition between the national and state-level views, updating the stroke width during the zoom.