This map shows the relative frequency of airline arrival delays across U.S. states, with each state filled in teal and circles positioned at airports affected by delays. The visualization uses a React front end with D3 v5's `geoAlbersUsa` projection and `geoPath` to render state boundaries from a TopoJSON US Atlas, while bubble sizes are scaled using `scaleSqrt`. Delay data is loaded as CSV via D3's `csv` function and mapped to latitude and longitude coordinates. Hovering highlights state shapes, and circles maintain semi-transparent blue fills.