This visualization displays a horizontal bar chart of the top 15 countries by basic cost using 2019 World Population data. The chart renders as an SVG within a React app, with blue grid lines and numeric labels along the x-axis and country names on the y-axis. The code uses React hooks (`useState`, `useEffect`) to load and manage CSV data via `d3.csv`, then applies `scaleBand` for categorical positioning and `scaleLinear` for quantitative scaling. D3’s `max` function computes the domain for the cost values.