This example shows a bar chart of the top 10 most populous countries, using 2018 population estimates from the United Nations World Population Prospects. The chart customizes both axes: the y-axis removes the domain line and tick lines, while the x-axis applies a custom tick format that abbreviates large numbers using the `d3.format` function, replacing 'G' with 'B'. Built with d3.v5, it uses `scaleLinear` and `scaleBand` for positioning, with `axisBottom`, `axisLeft`, and SVG rendering to display the data.