This visualization displays a horizontal bar chart of the 2020 population for 30 countries, using a light-green fill for each bar. The chart is built with React and D3 v5, using `scaleBand` for the categorical y-axis and `scaleLinear` for the numeric x-axis. The SVG rendering includes a formatted tooltip on each bar, with tick labels formatted from grams to billions using `format('.2s')`. Data is loaded from a CSV file via the `csv` function, and axes are composed from custom components that generate tick marks and labels.