This stacked bar chart visualizes the distribution of religious affiliations across countries, using data from the UCI Machine Learning Repository via a Gist. The chart is built with the Vega-Lite API, running on top of Vega, Vega-Lite, and D3, and renders as an SVG. Population values are encoded on the y-axis, countries on the x-axis sorted by total y-values, and religion mapped to color. The code includes a custom config for dark-axis styling and employs Vega Tooltip for interactive hover details.