This example displays a bar chart of the top 10 most populous countries, using 2018 population estimates from the United Nations World Population Prospects. The chart highlights custom axis formatting and styling, including a tick format that converts large numbers (e.g., G to B) and the removal of default axis lines. Built with D3 v5, it uses `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to position bars and axes within an SVG canvas. A CSV file supplies the data, and CSS styles the text and tick marks.