A fixed US map, projected with `geoAlbersUsa`, draws all state boundaries as SVG paths. Red circles mark the geographic centroid of each state, using `geoCentroid` and the same projection to position them. The map supports zooming via an event-driven `zoom` interaction that applies a transform to the grouped SVG elements. State boundaries are generated from TopoJSON data merged with CSV sales records for a single date, though the sales values themselves are not visualized.