This example shows a world map rendered as an orthographic projection of landmasses and graticules, with country borders highlighted. It uses D3’s `geoOrthographic`, `geoPath`, and `geoGraticule` to project and draw the sphere, graticule grid, and land features from a TopoJSON world-atlas dataset, while `topojson.feature` and `topojson.mesh` extract geometries and interior borders. React manages the component structure and data loading via a custom `useData` hook, with all shapes output as SVG paths.