{"version":"1.0","type":"rich","title":"question 4","description":"This bar chart displays the 2020 population estimates for the 30 most populous countries. Population values are loaded from a remote CSV file using D3’s `csv` function, then rendered as SVG rectangles positioned by `scaleBand` for countries and `scaleLinear` for population. Both axes are drawn from reusable React components, with tick formatting converting large numbers into abbreviated ‘B’ for billions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/26bd29b4e1644dc194ff2657b3d86122?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}