This map uses the geoAlbers projection to center the United States, showing state boundaries as black interior lines against a green landmass. The sphere is filled with sky blue, while graticules are rendered subtly in gray, though the graticule paths are defined but not explicitly drawn in the visible code. Data comes from US Atlas TopoJSON, converted using the `feature` and `mesh` methods from topojson. The visualization is built with React, rendering SVG paths generated by `d3.geoPath` and `d3.geoGraticule`.