This example shows the top 10 most valuable companies by market value, displayed as a horizontal bar chart with the company name on the y-axis and company value on the x-axis. The visualization is built using React for component structure and D3 v5 for scales and data loading via `d3.csv`. Bars are rendered as SVG `<rect>` elements, with `d3.scaleBand` and `d3.scaleLinear` positioning bars and axes, while custom `AxisBottom` and `AxisLeft` components generate tick marks and labels. Company values are formatted with `d3.format` to abbreviate billions.