This interactive map of the United States displays state boundaries using the `d3.geoAlbersUsa()` projection and `d3.geoPath()`, with geographic data sourced from `us-atlas` and parsed via `topojson-client`. Users can click any state to zoom into it using the `d3.zoom` behavior, with a 750ms transition, while hovering highlights the state in red and shows a tooltip with its name. A background click or the “Reset View” button restores the original view. The visualization also supports loading external CSV data, such as the provided `nics.csv` firearm background-check statistics.