This example displays a world map with city points, using a natural Earth projection to render country boundaries, graticules, and interior borders from World Atlas TopoJSON data. City locations are plotted as semi-transparent circles based on latitude and longitude coordinates loaded from a CSV file. The visualization is built with React for component structure and D3 v5’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule` for map geometry, rendered as SVG elements.