This horizontal bar graph displays the 10 most populous countries in 2020, ranked by population size. Built with React and D3 v5, the visualization uses `scaleBand` and `scaleLinear` to map country names and population values to SVG rectangles. The data comes from a CSV file of UN Population 2019 estimates, loaded via D3's `csv` function. Each bar includes a tooltip showing the formatted population value, with axes rendered through custom `AxisBottom` and `AxisLeft` components using D3 tick formatting.