This interactive map visualizes global immigrant flows between countries for 2020, based on UN migration data. Clicking a country highlights its origin by turning it red and draws curved flow lines to its destinations, with stroke color encoding the number of immigrants via a sequential blue-purple color scale. The visualization uses d3.geoNaturalEarth1 projection and d3.geoPath to render world map features, while React manages the selection state and d3.zoom enables pan and zoom interactions.