This horizontal bar chart visualizes the 2020 population of 30 countries, sorted alphabetically on the y-axis with population encoded by bar length on the x-axis. Built with React and D3 v5, it uses `scaleBand` and `scaleLinear` for positioning, with data loaded via `d3.csv` from a GitHub dataset. SVG rendering includes custom `AxisBottom` and `AxisLeft` components, while `Marks` renders bars with tooltips formatted using `d3.format`.