This choropleth map visualizes World Bank GDP per capita data on a world atlas, using D3's `geoOrthographic` projection and `geoPath` to render countries color-coded with a quantile `schemeYlGnBu` scale. Users can rotate the globe by dragging, zoom with the mouse wheel, and hover over countries to see tooltips with the country name and GDP value. A color legend indicates low and high values, and the visualization responds to window resizing.