This bubble map displays global natural gas production by country, with circle size proportional to production volume. The visualization uses D3.js v6 with a Mercator projection, plotting latitude and longitude coordinates from a CSV file onto a GeoJSON world map. The map renders as gray SVG paths with blue semi-transparent bubbles, sized using d3.scaleLinear. Country positions are projected via d3.geoPath with a custom geoMercator projection, while the data loading relies on Promise.all to fetch both the GeoJSON and CSV sources.