This stacked bar chart reveals the distribution of religious affiliations by country, with each bar sorted by total population and segmented by religion. The visualization is generated using the Vega-Lite API, which constructs a declarative specification for the mark `markBar` and encodings for x, y, color, and tooltip. It relies on Vega-Lite’s `vl` API, registers with Vega and Vega-Lite libraries, and fetches CSV data from a Gist. The chart uses custom configuration for axis styling and renders with an SVG view.