This example visualizes religious demographics across countries using a bar chart, with each bar representing a country and the color encoding the population for each religion. The visualization is built using the Vega-Lite API and rendered with D3.js, incorporating vega-tooltip for interactive hover details. Data is loaded from a CSV file hosted on GitHub, containing population figures for various religions by country. The chart fills the entire window and uses custom styling to adjust font sizes and axis appearance for readability.