This horizontal bar chart displays salary data for employees at different ages, using bars whose lengths encode salary values and y-axis positions encode age. The visualization is built with React and D3 v5, using `scaleBand` and `scaleLinear` to map data to SVG rectangle marks, with custom axis ticks rendered via D3’s `axisLeft`, `axisBottom`, and `scaleLinear` methods. It loads CSV data from a GitHub gist, filtering the first 15 rows, and renders entirely as SVG within a React component, with loading state managed via React hooks.