This chart shows cumulative COVID-19 deaths over time for each country as a series of log-scaled line paths in SVG, with a red Voronoi overlay that defines hover regions. The data comes from the Johns Hopkins Coronavirus dataset, loaded via d3.csv. React manages the component hierarchy, while d3.scaleTime, d3.scaleLog, and d3.line generate the axes and paths. The VoronoiOverlay uses d3.Delaunay’s voronoi method to compute cell polygons from a set of points, rendering them as red svg paths.