This horizontal bar chart visualizes the number of births across ten U.S. states, using a viridis color scale to encode magnitude. The chart displays the data as animated bars that grow from zero to their final width, with a color gradient legend beneath. Built with D3 v6, the visualization uses `scaleLinear` for the x-axis, `scaleBand` for the y-axis, and `interpolateViridis` for coloring. Hovering over a bar triggers a tooltip showing the state name and exact birth count. The underlying data comes from a CSV file containing state names and their corresponding birth statistics.