A React-based dashboard renders COVID-19 summary data from the covid19api.com REST endpoint. It displays global and per-country metrics as animated SVG bar charts, with the D3 v5 library handling chart construction—using `scaleBand` for categorical axes, `scaleLinear` for quantitative values, and `transition` for bar width animations. The interface uses Materialize CSS components, featuring a navigation bar for switching between views and country select dropdowns. Data updates occur through button clicks that refetch and re-render the visualizations.