This stylized bar chart displays the top 10 most populous countries using United Nations World Population Prospects 2019 data. The visualization uses React with SVG rendering, employing d3.scaleBand for the categorical y-axis and d3.scaleLinear for the population x-axis. The d3.csv loader fetches and formats the data, while d3.format converts population values into abbreviated tick labels like "1.4B". Custom React components construct the axes and rectangular marks, with each bar featuring a native SVG tooltip showing the precise population figure.