This example presents a bar chart of COVID-19 total cases by country, using data loaded from a remote CSV file. The chart is rendered as an SVG element using D3 v7, with a rotated x-axis to accommodate country labels and a linear y-axis for case counts. The code demonstrates D3’s scaleBand and scaleLinear for axis scaling, and uses the `join` operator to efficiently create bar rectangles, with a steelblue fill for the bars.