This example shows a stacked bar chart of population by country, colored by religion, using a dataset loaded from the UCI Auto MPG repository (via a Gist URL). The visualization is built with the Vega-Lite API, which generates a Vega-Lite specification that is rendered by the Vega engine. The code uses `vl.markBar()`, `vl.x().fieldN()`, `vl.y().fieldQ()`, and `vl.color()`, and it relies on d3's `csv` loader to fetch the data. The chart is interactive, including a tooltip via the Vega-Tooltip handler.