This horizontal bar chart displays the top 30 countries by population in 2020, with each bar’s length encoded by population value and colored by a pastel ordinal scale. Built with D3 v7, the visualization uses `d3.scaleBand` for the categorical y-axis, `d3.scaleLinear` for the quantitative x-axis, and `d3.axisBottom`/`d3.axisLeft` to generate tick marks. Data loads asynchronously via `d3.csv` from a GitHub Gist, and bars are drawn as SVG rectangles with opacity, while axis labels and tick styling are applied through CSS.