This stylized bar chart displays the top 20 most populous countries, using horizontal bars ordered from largest to smallest. The visualization is built with React and D3 v5, using `scaleBand` for the y-axis and `scaleLinear` for the x-axis to map population values. Data comes from the United Nations World Population Prospects 2019, loaded via D3's `csv` function. The SVG rendering includes axes with custom tick formatting (converting values to billions) and a labeled x-axis, all styled with the Poppins font family.