This choropleth-style map displays the 50 United States using an Albers equal-area conic projection, with each state filled in green and white borders defining state boundaries. Hovering over a state changes its fill to orange. The visualization is built with React, D3.js v5, and TopoJSON, using `d3.geoPath()` to render geographic shapes and the `geoAlbersUsaTerritories()` projection. State geometry is loaded from a US Atlas TopoJSON file, and the map is rendered as SVG.