{"version":"1.0","type":"rich","title":"Activity 7.1","description":"This donut chart visualizes the top 10 most populous countries in 2020, with each slice scaled by population and a hover tooltip showing exact figures and percentages. It uses D3 v7 to load CSV data from a GitHub gist, generate the pie layout with `d3.pie()` and `d3.arc()`, and color slices via `d3.scaleOrdinal`. The chart renders with SVG, includes a loading indicator, error handling, and a detailed legend showing country names and population counts.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/954fae689cab4c34926fbd69a39ce74b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}