This visualization displays cumulative global COVID-19 deaths over time as a multi-line chart, with each country represented by a gray path on a logarithmic scale. Hovering over any point highlights that country’s full trajectory in blue. The chart uses React with D3 v6 scales (scaleTime, scaleLog) and a d3.line generator, while a d3.Delaunay-based Voronoi overlay enables precise mouse interaction. Data comes from the Johns Hopkins CSSE time-series CSV, rendered as SVG elements.