This visualization shows the total number of dead and missing migrants per month, displayed as a histogram with bars representing monthly sums over time. Using React with D3.js v5, the code employs `d3.bin` to group data into monthly intervals and `d3.sum` to aggregate the casualty counts for each bin. The chart renders SVG rectangles scaled by `d3.scaleTime` on the x-axis and `d3.scaleLinear` on the y-axis, with data sourced from the Missing Migrants Dataset.