This interactive map visualizes U.S. home price performance by state, with states colored according to their seasonally adjusted one-year price change, and overlays circles for cities sized by population. Hovering reveals detailed metrics for both states and cities. Built with D3.js v7 and TopoJSON, it uses `d3.geoAlbersUsa` and `d3.geoPath` to render state boundaries, while a sequential color scale applies a blue interpolator to encode performance data from the CSV files.