This interactive map visualizes global migration flows for the year 2020, showing curved lines between countries that represent immigrant origins and destinations. Users click on a country to isolate and display only the flows originating from that nation. The visualization uses D3’s `geoNaturalEarth1` projection, `geoPath` for rendering the world map and graticules, and React for handling user interactions. Geographic coordinates are derived from a CSV file, while migration counts come from a separate dataset; the map itself is built from topojson data converted to GeoJSON.