This visualization presents a centered map of the United States, displaying state boundaries as colored polygons to represent a quantitative rate per state. The map is rendered using SVG within a React framework, with geographical data loaded from the US Atlas TopoJSON. The code employs D3 v4 APIs such as `geoPath` and `geoAlbers` to project the map, and `scaleThreshold` with `schemeGreens` to color states based on rates from a TSV file. Gratricules are included as a visual aid.