This stacked bar chart visualizes the distribution of religious affiliations across countries, with the size of each circle encoding population counts. Built with the Vega-Lite API, the chart maps country names to the x-axis and religions to the y-axis, while a tooltip reveals exact population values on hover. The visualization leverages d3.csv to load the religionByCountryTop5 dataset and applies custom configuration to style axes, labels, and titles for improved readability.