This visualization displays the distribution of major religions across Indian states using a hierarchical tree structure, with India at the root and religions such as Hinduism, Islam, and Christianity as primary branches. Each religion branches into individual states, with node size representing relative population values. The rendering employs D3.js v7’s force-directed layout, using `d3.forceSimulation` to position nodes and SVG circles and links for display. Color coding distinguishes hierarchy levels: blue for religion nodes and purple for state leaf nodes. The static HTML references external CSS and JavaScript files to manage styling and layout.