A choropleth of the United States displays each state’s population from the 2020 census via a yellow-orange-red sequential color scale. The map renders with D3.js v7 and the TopoJSON library, using `d3.geoAlbersUsa` for the Albers projection and `d3.geoPath` for state boundaries. Hovering over a state reveals its population in a tooltip, while gray fills indicate missing FIPS codes from the `us-atlas` dataset.