This visualization displays the Missing Migrants dataset on a world map, with each circle representing a single event where migrants have died or gone missing. The circle radius encodes the total number of dead and missing using a square-root size scale. It renders geographic basemap features using `d3.geoPath` with a Natural Earth projection, including land polygons, graticules, and country interiors from the world-atlas TopoJSON source. The D3 `geoGraticule` and `geoNaturalEarth1` functions generate the map framework, while React manages the state and SVG rendering.