This example visualizes total advertising spend across different management entities using horizontal bar charts. The bar lengths encode the numeric "Total Ad Spend" values, while the y-axis lists the corresponding management entities. The SVG rendering uses D3 v5’s `scaleLinear` and `scaleBand` for positioning, with `axisLeft` and `axisBottom` for tick marks. Data is loaded via `d3.csv` from a local CSV file, and bar colors are styled through CSS.