This horizontal bar chart shows the 2020 population of 30 countries, ranked with the largest at the top and the smallest at the bottom. Each bar’s length encodes population value, a tooltip via SVG `<title>` shows the formatted number, and axes use blue grid lines with labels. The React app loads CSV data from a GitHub URL using `d3.csv`, scales positions with `d3.scaleBand` and `d3.scaleLinear`, formats ticks with `d3.format`, and renders all elements as SVG through reusable local components.