This bar chart displays the top three most populous countries—China, USA, and India—using horizontal bars scaled by population (in millions). Built with React and D3 v5, it uses `scaleBand` for the categorical y-axis and `scaleLinear` for the numeric x-axis, rendering SVG rectangles via the `Marks` component. Population values are formatted with D3’s `format` function to abbreviate large numbers (e.g., “12.06B”), and styled with red fills and Poppins font. Data comes from a local CSV file, with axes drawn through custom `AxisBottom` and `AxisLeft` components.