A React application renders the top 10 most populous countries from the UN World Population Prospects 2019 dataset as a simple bar chart with no axes. The bars are drawn as SVG rectangles, with country names on the vertical scale and population values mapped to horizontal widths. Using `d3.csv` for data loading, `d3.scaleBand` for the categorical y-axis, and `d3.scaleLinear` with `d3.max` for the continuous x-axis, the visualization displays raw population data without additional chart furniture, keeping the presentation deliberately minimal.