A multi-line chart displays cumulative global coronavirus deaths over time for each country, with a logarithmic y-axis. A Voronoi overlay, generated via `d3.Delaunay` from the chart’s data points, is rendered as pink cell boundaries across the plot area to illustrate spatial partitioning. The visualization uses React components, D3 v5 for scales and axes, and SVG paths for the lines and overlay, sourcing data from the CSSE COVID-19 time series.