This example displays a horizontal bar chart of the top 10 most populous countries, using a custom-designed axis and grid lines. The chart reads population data from a CSV file, multiplying values by 1000 to convert them to actual figures, and uses D3’s `scaleLinear`, `scaleBand`, `axisBottom`, and `axisLeft` to create the scales and axes. It customizes the x-axis tick labels with a formatting function that abbreviates numbers (e.g., converting 'G' to 'B') and removes the y-axis domain and tick lines. The bars are rendered as SVG rectangles with steelblue fill, and the chart includes a title and axis labels.