This D3.js (v7) world map uses a choropleth to show the most recent year of United Nations population data (from the `datasets/population` GitHub repository). Country colors are mapped to population using a log-scaled YlGnBu interpolator to handle data variance, and the SVG rendering applies a Natural Earth projection via `d3.geoNaturalEarth1`. The map includes graticule lines, hover tooltips with a `d3.select`-based title element, and a log-scale gradient and axis legend using `d3.axisBottom`.