This bar chart displays the populations of the world’s ten most populous countries, sorted by rank, with China leading and Mexico last. The code loads a CSV file using `d3.csv`, scales the data with `d3.scaleLinear` for the x-axis and `d3.scaleBand` for the y-axis, and renders SVG rectangles. Axes are generated via `d3.axisBottom` and `d3.axisLeft`, with the chart drawn inside an SVG container using D3 v5.