This bar chart displays population values for 100 synthetic cities, with each bar’s height representing the population count and hover tooltips revealing exact figures. The visualization uses D3.js v7 to load CSV data via `d3.csv`, scale the values with `scaleBand` and `scaleLinear`, and render the chart as SVG. Horizontal grid lines created with `axisLeft` improve readability, while the x-axis labels are rotated to accommodate the many city names.