This bar chart visualizes the wealth of various companies in billions, with each bar’s height corresponding to its value and a hover effect turning bars red. The visualization is rendered as an SVG using D3.js (v6), with data loaded from a CSV file via `d3.csv`. The chart employs `d3.scaleBand` for the x-axis (company names) and `d3.scaleLinear` for the y-axis (wealth), with axis labels generated by `d3.axisBottom` and `d3.axisLeft`. Bar colors are dynamically set to a blue gradient based on wealth value.