The visualization displays infant mortality rates from 1998 to 2011 using a combined line and area chart. It shows the trend of the infant rate over time, with the area under the curve emphasizing the magnitude of the values. The chart is built with D3.js v5, using `d3.scaleLinear` for both axes, `d3.line` and `d3.area` with `curveBasis` for smooth interpolation, and `d3.axisBottom` and `d3.axisLeft` for labeled axes. The data is loaded via `d3.csv` from a remote CSV file and rendered as SVG.