This visualization displays a horizontal bar chart comparing the populations of ten countries in the year 2020, sourced from a CSV file hosted on GitHub. The example demonstrates how to integrate D3 v5 within a React component, using `scaleBand` for the categorical y-axis, `scaleLinear` for the quantitative x-axis, and `format` for axis tick labels (e.g., converting billions to "B"). SVG rectangles render the marks, with tooltips showing precise values via the native `<title>` element.