This choropleth map visualizes earthquake totals across US states, using a log-transformed color scale to differentiate seismic activity levels. Built with D3 v5 and TopoJSON, it renders state boundaries as SVG paths via d3.geoPath and the geoAlbersUsa projection. A threshold color scale maps logged earthquake counts to a sequential OrRd scheme, while interactive hover effects highlight individual states. The map also includes embedded tooltips showing state name, region, and raw earthquake totals, with data loaded from CSV and TopoJSON sources.