This example displays a bar chart of the top 10 most populous countries using 2018 data from the United Nations World Population Prospects, presented as horizontal bars with population values on the x-axis. It demonstrates customized axes in D3.js: the x-axis uses a linear scale with tick labels formatted in abbreviated units (e.g., “B” for billions), while the y-axis is a band scale for country names, with grid lines and axis labels styled via CSS. The code uses d3.csv, scaleLinear, scaleBand, axisBottom, and axisLeft to render the SVG chart.