This bar chart displays monthly sales figures for 100 coffee shop branches, using a sequential blue color scale to encode the magnitude of sales. The visualization, built with React and D3 v7, renders SVG rectangles for each branch, with axis labels and a title. Using d3.csv to load data, the code employs scaleBand and scaleLinear for positioning, d3.axisBottom and d3.axisLeft for ticks, and d3.interpolateBlues for color mapping.