This visualization displays the population of 30 countries in 2020 using horizontal bar charts rendered as SVG rectangles. The bars are sorted by country name along the y-axis, with x-axis lengths scaled proportionally to population values, formatted in billions. Built with React and D3 v5, the implementation uses `scaleBand` for the categorical y-axis, `scaleLinear` for the quantitative x-axis, and `csv` to load data from a GitHub-hosted dataset. Tooltips show formatted population values via SVG `<title>` elements.