This horizontal bar chart displays the population of 20 countries in 2010, sorted by country name, with bars extending from a shared left baseline. The visualization is built with React and D3 v5, using `scaleBand` for the categorical y-axis and `scaleLinear` for the quantitative x-axis. Population values are loaded from a remote CSV file via `d3.csv`, formatted with `format('.2s')` to show abbreviated labels like “1.2B”, and rendered as SVG rectangles with native tooltips. The code includes reusable axis components and applies a green fill to the bars.