This choropleth map visualizes the number of entrepreneurs per U.S. state, with color intensity ranging from white (zero) to blue (high values). The map uses d3.geoMercator projection and d3.geoPath to render state boundaries from GeoJSON data, while a d3.scaleLinear maps state counts to fill colors. Interactive tooltips display the state name and entrepreneur count on mouseover, with highlighted states transitioning to red. The visualization includes a legend quantifying the color scale, and data is loaded from a CSV file via d3.csv.