{"version":"1.0","type":"rich","title":"Count Over Time for Nuclear Explosions","description":"This visualization shows the annual count of nuclear explosions per country from the 1940s onward, highlighting shifts in leadership between the USA and USSR over time. It uses a line chart where the y-axis aggregates counts by country, with each line colored by nation. The code builds the chart with vega-lite-api, wraps it with vega and vega-lite, and loads data from a CSV via d3.csv (using d3 v5). Tooltips are enabled through vega-tooltip, and custom axis styling is defined in a separate config file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6564525e2c61457d96b282b152241ffe?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}