This bar chart displays the 2020 population estimates for the top 30 countries, sorted by country name along the vertical axis. Horizontal bars extend from the y-axis, with bar length proportional to population magnitude. Using d3.v6, the visualization employs d3.scaleLinear for the x-axis, d3.scaleBand for categorical y-axis spacing, and d3.axisBottom/axisLeft for tick marks. Data loads asynchronously via d3.csv from a GitHub gist, with marks rendered as SVG rectangles filled in steelblue.