A world map visualizes global temperature data over time, displaying a smooth curve and individual data points across a time-series chart. The visualization uses D3 v5 with React, rendering as SVG. It employs `scaleTime` and `scaleLinear` for axes, `line` with `curveNatural` for the path, and `json` to load geographic data from the world-atlas package, though the map itself is not drawn.