A line chart displays smoothed daily COVID-19 death counts for the top 50 countries by cumulative deaths, using a logarithmic y-scale and time-based x-axis. Each gray line represents a country; hovering via a d3.Delaunay Voronoi overlay highlights the corresponding line and shows a tooltip with the country’s total deaths and date. Data comes from the Johns Hopkins Coronavirus dataset, processed with d3.csv and a moving-average blur function, and rendered as SVG paths using d3.line, d3.scaleTime, and d3.scaleLog within React.