This interactive map visualizes 2018 population data by country, overlaying semi-transparent teal circles on a natural Earth projection. Circle area encodes population magnitude using a square-root scale, while hover effects reveal exact figures and missing data is highlighted in red. Built with D3 v5, the visualization uses `geoPath` for map rendering, `geoCentroid` for positioning circles, and `scaleSqrt` for proportional sizing. Pan and zoom are enabled via D3's zoom functionality, with a size legend explaining the population scale.