A hierarchical tree diagram shows the parent-child relationships among Indian geographic locations, from country to city level. Circles represent each node, connected by animated straight-line paths that grow from parent to child. The visualization uses D3 v6’s `d3.stratify` to structure the data and `d3.tree` for layout, with SVG rendering. Node and label transitions animate over 800 milliseconds, while text opacity and delays vary by tree depth. Styling applies turquoise circle fills, salmon strokes, and black connectors.