This chart displays cumulative COVID-19 deaths over time for each country as thin gray lines on a logarithmic y-axis, using data from the Johns Hopkins Coronavirus Dataset. A Voronoi overlay, computed with `d3.Delaunay` from the d3-delaunay library, renders red cells over three hardcoded points, providing a potential interaction region for hover events. The React-based visualization employs `d3.scaleLog`, `d3.line`, and `d3.axisBottom`/`d3.axisLeft` to construct the SVG, with axis tick marks drawn as grid lines.