This example shows a horizontal bar chart of the top 10 countries by population in 2020, using data loaded from a CSV file via `d3.csv`. React renders an SVG containing scaleBand and scaleLinear axes, with custom tick marks and labels generated from `xScale.ticks()`. The bars are drawn as `<rect>` elements using D3’s scale functions, while React hooks (useState, useEffect) manage data loading and state. The chart updates automatically once the data arrives, displaying a clean, styled visualization with a left margin for country names.