This example visualizes the Missing Migrants Dataset, plotting each event as a circle on a world map where circle size encodes the total dead and missing. It renders a Natural Earth projection using `d3.geoNaturalEarth1` and `d3.geoPath`, with graticules and country boundaries from World Atlas TopoJSON. React manages the component state and data loading, while D3’s `scaleSqrt` determines radius scaling from the data’s maximum value. Circles are drawn as SVG elements with partial opacity.