This visualization compares monthly unemployment rates in Rhode Island (RIUR) and the United States (USUIR) from 1976 onward using two overlaid line charts. Steel-blue and orange paths represent the respective rates, while red dots mark notable Rhode Island spikes. The chart uses d3.scaleTime, d3.scaleLinear, and d3.line to construct the axes and paths, with d3.csv loading the two datasets. React manages the component state, and the visualization renders inside an SVG with grid lines, axis labels, and a legend showing series colors and spike markers.