This bar chart displays the one-year return of the top 10 most populous IT companies, sorted by company name along the vertical axis and return percentage on the horizontal axis. Built with React and D3 v5, it uses `scaleBand` for the categorical y-axis and `scaleLinear` for the continuous x-axis, rendering SVG rectangles as marks. The data comes from a CSV file of company returns, loaded via `d3.csv`, with tooltips showing exact values and axes labeled with tick marks and a descriptive title.