This stylized bar chart displays the top 10 most populous countries, using horizontal bars to compare their 2020 populations. The visualization uses a D3.js v5 linear scale for the x-axis and a band scale for the categorical y-axis, rendered as an SVG through React. Data comes from the United Nations World Population Prospects 2019, loaded via D3's CSV parser. The chart includes labeled axes and tooltips that format population values in billions.