This bar chart visualizes the growth of the U.S. M2 money supply in billions of dollars over time, using a horizontal bar layout where each bar represents a year. The React-based example loads CSV data via `d3.csv` and employs `scaleBand` and `scaleLinear` from D3 v5 to position bars and axes, rendering everything as SVG. It features custom gridlines, formatted tick labels, and rounded bars with hover effects and drop shadows, all styled through CSS to create a clean, modern presentation.