This stylized bar chart visualizes the top 10 countries by population for 2020, using data from a CSV file loaded via D3's `csv` utility. The chart encodes population values horizontally and country names vertically, with the styled bars, axes, and text rendered as SVG through React components. The code utilizes D3 scales (`scaleBand` and `scaleLinear`) for positioning, a custom `tooltipFormat` using D3's `format` function, and React state managed via the `useData` hook. The design features a Poppins font, teal bars, and muted axis colors.