This bar chart displays the population of the top 10 most populous countries, based on 2018 estimates from the United Nations World Population Prospects. The code uses D3 v6 with `d3.csv` to load the data, `scaleLinear` and `scaleBand` for scales, and `axisLeft` and `axisBottom` for axes. SVG rectangles represent the bars, with tick formatting converting values to abbreviations like “1.41B” and a light gray background for the chart area.