This example shows a horizontal bar chart of UN population data for 2020, with custom axes rendered using React and D3. The chart displays the top 10 countries by population, using D3’s `scaleBand` for the categorical y-axis and `scaleLinear` for the numeric x-axis. Ticks for both axes are manually generated via `xScale.ticks()` and mapped to SVG `<line>` and `<text>` elements, with margins applied via a `<g>` transform. Data is loaded asynchronously from a CSV using `d3.csv`.