This interactive visualization shows the flow of travelers between five global regions across a 12-month period. The main map uses a Mercator projection with curved paths connecting regions, where stroke width represents the volume of travel, and hovering reveals exact numbers. A range slider allows selection of individual months. The visualization also includes a stacked area chart depicting time-series data for these regions. The code uses `d3.geoPath`, `d3.geoMercator`, `d3.scaleOrdinal`, and `d3.stack` within a React framework, rendering via SVG with animation.