This bar chart displays the population of the top 10 most populous countries, using 2018 estimates from the United Nations World Population Prospects. It emphasizes axis customization, including formatted tick labels (e.g., “1.42B”), horizontal grid lines, and a custom axis label, all rendered as SVG. The code uses D3 v5 with `scaleLinear`, `scaleBand`, `axisBottom`, and `axisLeft`, and loads data from a CSV file via `csv()`. Population values are multiplied by 1,000 to reflect actual figures.