Vertical bar chart
A vertical bar chart displays the population of the top 10 most populous countries, with data from the 2018 United Nations World Population Prospects. The chart uses SVG rendering with D3 v5, employing `scaleBand` for the categorical x-axis and `scaleLinear` for the y-axis, which is formatted to abbreviate large numbers (e.g., "1.3B"). Custom axis styling includes rotated tick labels, horizontal grid lines, and labeled axes. Bars are colored steelblue, with a dark orange title, demonstrating D3's axis customization capabilities.