This bar chart displays the population of the top 10 most populous countries in 2020, based on UN World Population Prospects data. The visualization uses d3.scaleLinear for the x-axis mapping population values and d3.scaleBand for the y-axis country categories. It renders SVG rectangles with a steelblue fill, loads data via d3.csv, and employs d3.axisLeft and d3.axisBottom for the axes. The code applies margins and transforms to position the chart within an SVG canvas.