This choropleth map displays US state unemployment rates, with each state colored on a sequential blue-purple scale (d3.interpolatePuBu) according to its percentage. The visualization loads state boundaries from the us-atlas TopoJSON file and joins CSV data containing state names and unemployment values. Hovering over a state reveals a tooltip showing the state name and its unemployment rate or “N/A” for missing data. The map uses d3.geoPath with a d3.geoAlbersUsa projection and renders as SVG, with states encoded as paths and tooltip positioning handled via mouse events.