This stylized bar chart displays the top 10 most populous countries in 2020 using data from the United Nations World Population Prospects 2019. The visualization uses React with D3 v5’s `scaleBand` and `scaleLinear`, rendering bars as SVG rectangles with tooltips via the `title` element. Horizontal grids and labels are drawn from `AxisBottom` and `AxisLeft`, which utilize `xScale.ticks()` and `yScale.domain()`. The x-axis formats population values with the `format('.2s')` function, replacing ‘G’ with ‘B’ for billions. Data loads asynchronously via `csv`, with the top ten entries sliced after parsing.