This example displays a horizontal bar chart of the top 10 most populous countries, with population values on the x-axis and country names on the y-axis. Using D3.v7, the code loads data from a CSV file and scales it by 1,000. It customizes the axes by removing the y-axis domain and tick lines, applying a custom tick formatter that converts values from G to B (billions), and styling grid lines and axis labels via CSS. The chart is rendered as SVG within a React-like setup, though the implementation uses direct DOM selection and appending.