This bar chart displays the population of the top 10 most populous countries using 2018 estimates from the United Nations World Population Prospects. The visualization highlights custom axis styling, including formatted tick labels that convert large numbers to abbreviations (e.g., "1.4B") and removal of default axis lines. Built with D3 v5, the chart uses `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to render SVG elements. Gridlines extend from the x-axis ticks, while the y-axis labels are simplified by removing tick marks and domain lines.