This example visualizes cumulative coronavirus deaths over time for multiple countries using a log-scaled line chart. A Voronoi overlay, generated with `d3.Delaunay` and `d3.voronoi`, makes each line segment hoverable, highlighting the active country’s path in black. The chart uses `scaleTime` and `scaleLog` for axes, with data from the CSSE COVID-19 time series. React manages the hover state, while SVG renders the paths and overlay.