This visualization shows the distribution of religious populations across countries using a bubble chart, with circle size encoding population quantity and tooltips revealing exact values. The chart is built with the Vega-Lite API, which wraps Vega and Vega-Lite to generate an SVG rendering. The code imports data from a CSV file using D3's `csv` function, then configures axes, tooltips, and a dark color scheme for readability. The visualization occupies the full viewport and updates its size dynamically based on the window dimensions.