This chart displays cumulative global coronavirus deaths over time for each country, using a logarithmic y-axis to accommodate the wide range of death counts. A Voronoi overlay, built with `d3.Delaunay` and `d3.voronoi`, enables interactive hover detection: hovering over any point highlights that country's full line in bold black. The visualization is rendered as SVG within a React component, using D3 scales and line generators to plot the data from Johns Hopkins' COVID-19 dataset.