A stacked bar chart shows the top five religions by country, with bar height encoding population and color encoding religion. Built with the Vega-Lite API, the example renders using Vega, Vega-Lite, and D3.js for data loading. The visualization loads CSV data from a GitHub gist, applies a dark theme with custom axis and label styling, and includes tooltips for each bar segment. It fits the chart to the full browser window using an autosize configuration.