{"version":"1.0","type":"rich","title":"Question_2","description":"A population treemap displays yearly population values for several countries as horizontal bars on a band scale. Hovering highlights a bar and reveals a tooltip with the specific year and population figure. The visualization uses D3 v7 APIs including `d3.scaleBand`, `d3.scaleLinear`, `d3.axisLeft`, and `d3.schemeSet3` for color encoding. Population data is loaded from a CSV file and rendered as SVG rectangles, with axes formatted using `d3.format`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6829519afb0e4eb68d8969b073826bb6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}