This example displays Walmart sales figures for 15 U.S. cities using a horizontal bar chart rendered as SVG. It loads data from a CSV file via `d3.csv`, maps sales values to bar widths with `d3.scaleLinear`, and positions city labels using `d3.scaleBand`. Gridlines and tick labels are generated from the x-scale’s ticks. The visualization is built with React components and D3 v5, where axes are manually drawn using SVG elements rather than D3’s axis helpers.