This bar chart displays country populations from a local CSV file, with countries on the y-axis and population on the x-axis using a linear scale. Red horizontal bars are rendered as SVG rectangles, with axis labels and a bold title. The code uses D3 v5 functions such as `csv`, `scaleLinear`, `scaleBand`, `axisLeft`, `axisBottom`, and `format` within a React starter template. Gridlines are drawn via tick sizes, and population values are formatted in scientific notation.