This stylized bar chart displays the ten most populous countries based on 2019 United Nations World Population Prospects data. The visualization uses React with SVG rendering, employing d3.scaleBand and d3.scaleLinear to position bars and axes. Population values are formatted using d3.format with a custom tick formatter that converts values to billions. The chart features a clean design with Poppins typography, teal-colored bars, and tooltips that appear on hover showing each country's population.