This bar chart shows the total number of Nobel Prizes awarded in each category—Chemistry, Literature, Medicine, Peace, Physics, and Economics—based on historical laureate data from a CSV file. The visualization loads the dataset using `d3.csvParse` and renders the counts through an SVG bar chart built with D3 v7. Category counts are sorted descending and drawn as steelblue rectangles using `scaleBand` and `scaleLinear`, with axes generated by `axisBottom` and `axisLeft`. Hovering over a bar changes its fill to orange, and bars are labeled with rotated category names.