This example displays a horizontal bar chart ranking the ten most populous countries, based on 2018 United Nations population estimates. It demonstrates how to customize axis appearance and behavior using D3 v5. The code uses `d3.scaleLinear` and `d3.scaleBand` for scaling, `d3.axisLeft` and `d3.axisBottom` for axes, and custom tick formatting with `d3.format` to abbreviate numbers (e.g., 1.4B). Gridlines are added via axis tick sizes, while axis domains and tick lines are selectively removed for a cleaner look. The chart renders as SVG.