This example visualizes poverty data across Bangladesh’s districts using a choropleth map. Each district is colored on a white-to-red linear scale based on its “poor” percentage, with hover tooltips displaying the district name, ID, extreme poverty level, and poor level. The map is rendered as SVG using d3.geoPath and a mercator projection, with zoom and drag interactions applied via d3.zoom. TopoJSON data from two sources—a world map and a Bangladesh-specific dataset—is parsed with topojson.feature, while poverty statistics come from a local salesData.json file.