This bar chart displays the top 10 most populous countries for 2020, sourcing data from the United Nations World Population Prospects 2019 via a CSV file. The visualization uses React to render SVG markup, with D3 v5 for data loading and scaling via `csv`, `scaleBand`, and `scaleLinear`. Horizontal bars represent population counts, ordered by country along the y-axis, with axes generated by custom React components that map scale tick values to SVG lines and text.