This interactive bar chart displays the top 10 most populous countries in 2020 from United Nations World Population Prospects 2019 data, loaded via D3’s `csv` function. Rendered as an SVG using React, the visualization uses `scaleBand` for the categorical y-axis and `scaleLinear` for the numerical x-axis, with a Poppins font and custom color styling. Tooltips appear on hover via SVG `<title>` elements. The code imports `AxisBottom`, `AxisLeft`, and `Marks` from separate files, and formats axis tick labels using `d3.format`.