This visualization presents state-level housing price appreciation rates using a horizontal bar chart built with React and D3 v7. It ranks all 50 states plus the District of Columbia by their 5-year appreciation, with bars colored green, yellow, or red based on performance relative to the national average (computed via `d3.mean`). Interactive metric selector buttons let viewers switch between 1-period, 1-year, 5-year, and since-1991 appreciation rates, and clicking a bar highlights that state while dimming others. The chart uses `d3.scaleLinear`, `d3.scaleBand`, `d3.axisBottom`, and `d3.axisLeft` to render the data from a CSV file.