This chart displays cumulative COVID-19 death counts over time for multiple countries, using a log-scaled y-axis to accommodate wide numerical ranges. A Voronoi overlay enables hover interactions, highlighting the nearest data point and its corresponding country’s trajectory with a tooltip. Built with React and D3 v5, it uses `d3.scaleLog`, `d3.line`, and `d3.Delaunay` for geometric hit-testing. Data comes from the Johns Hopkins Coronavirus global time-series dataset, rendered as SVG paths.