This horizontal bar chart displays the populations of 30 countries for the year 2020, sorted by country name. The visualization uses React with D3 v5’s `scaleBand` and `scaleLinear` to map countries to vertical bands and population values to bar widths, rendered as SVG rectangles. Data is loaded from a remote CSV using `d3.csv`, and tooltips show formatted population values via a `d3.format` si-prefix. The axes are drawn with D3 ticks, with custom bottom and left axis components.