A spinning orthographic globe displays world countries as filled paths, rotating smoothly around a tilted axis. The visualization uses d3-geo’s `geoOrthographic` projection, `geoPath`, and `geoGraticule` to render landmasses and grid lines. Country boundaries come from the visionscarto-world-atlas TopoJSON dataset, fetched via `fetch` and converted with `topojson-client`. The animation is driven by React state updates, with rotation angles changing each frame via `requestAnimationFrame`, redrawing the map on every render.