This 3D bar chart visualizes the top 10 countries most affected by COVID-19, with each country’s total case count represented as a vertical bar. The example uses D3 v5 alongside the d3-3d and d3-x3d libraries to generate the interactive scene, which is rendered through X3DOM in the browser. Data is loaded asynchronously from a CSV file, then parsed and passed to a `d3.x3d.chart.barChartMultiSeries()` component attached to a chart holder div. The page includes custom CSS styling for the heading and body layout.