This visualization shows cumulative coronavirus deaths over time for each country, using a log-scaled y-axis to accommodate wide disparities in death counts. Hovering over any point highlights the corresponding country’s line in black and displays a tooltip with the country name, death total, and date. The interactivity is powered by a Voronoi overlay built with `d3.Delaunay`, which assigns each data point a cell that captures nearby mouse events. The chart is rendered with React and SVG, with axes and scales from d3, and pulls data from the Johns Hopkins COVID-19 dataset.