This histogram displays the monthly totals of dead and missing migrants, with time on the x-axis and the count on the y-axis. Using D3’s `scaleTime` and `bin` (histogram) API, the code aggregates the dataset by month, sums the reported casualties per bin, and renders the bars as SVG rectangles. The data comes from a CSV file loaded via D3’s `csv` function, and the visualization is built with React, D3 v5, and rendered as SVG.