This bar chart displays the top 10 most populous countries, using 2018 estimates from the United Nations World Population Prospects. It uses D3 v5 with an SVG renderer to draw horizontal bars, a linear scale for population, and a band scale for country names. The axes are customized with tick formatting that abbreviates large numbers, and gridlines are drawn via the x-axis. Data is loaded from a CSV file using the `d3.csv` method, with population values multiplied by 1000 for display.