This geospatial map displays the top 10 oil-producing countries in 2020, with bubble size scaled to each nation’s output in million barrels per day. The visualization uses a Natural Earth projection via `geoNaturalEarth1` and renders land, graticules, and sphere paths with `geoPath` and SVG circles. Country positions are projected from latitude/longitude coordinates, while bubble radii are determined by a square-root scale (`scaleSqrt`). The underlying data, sourced from the Energy Information Administration, is loaded using `d3.csv`, and the world atlas geometry is fetched from `world-atlas` and processed with `topojson`’s `feature` and `mesh` functions.