This example presents a COVID-19 dashboard built with React and D3 that fetches summary data from the covid19api.com API. Users load global or per-country statistics, which render as animated bar charts comparing new and total confirmed cases, deaths, and recoveries. The interface includes a navigation bar and country selector, both populated dynamically using D3 selections. Charts are drawn with D3 scales and axes, while React components manage state and lifecycle, with the d3.axisBottom, d3.axisLeft, and transition methods handling axis rendering and bar animations.