This visualization displays worldwide earthquake statistics from 2000 to 2015, comparing the annual frequency of earthquakes across four magnitude categories (5.5–5.9, 6–6.9, 7–7.9, and 8.0+). The chart uses four smoothed line series via d3.line with curveBasis, rendered as SVG paths, with each line color-coded by magnitude bracket. The axes are generated using d3.axisBottom and d3.axisLeft, and the data is loaded from a CSV file using d3.csv. The chart emphasizes relative trends and peaks in seismic activity over the fifteen-year period.