This visualization displays a horizontal bar chart of the top 10 most populous countries, using data loaded from a CSV file via `d3.csv`. The chart maps selling price to the y-axis with `d3.scaleBand` and year to the x-axis with `d3.scaleLinear`, rendering bars as SVG rectangles. The React component manages state with `useState` and `useEffect`, while D3’s `max` and `format` handle data scaling and tick labels.