An interactive choropleth of Indian states visualizes carbon emissions and sea-level change data from a GitHub-hosted GeoJSON file. The map uses a D3.js Mercator projection, with each state filled by a categorical color scale and labeled with its name. Hovering over a state triggers a tooltip, styled with D3 transitions, to display the state’s specific carbon emissions and sea-level metrics. The SVG-based rendering is built with `d3.geoPath` for drawing and `d3.scaleOrdinal` for coloring.