This stylized bar chart visualizes the ten most populous countries using United Nations World Population Prospects 2019 data. The code employs React with D3 v5, utilizing `scaleBand` for the categorical y-axis and `scaleLinear` for the population x-axis, rendering bars as SVG rectangles. The chart includes custom axis components, a formatted tick label that converts gigabytes to billions via `format('.2s')`, and hover tooltips using SVG `<title>` elements. The visualization deliberately omits traditional axes labels on the y-axis, presenting a minimal aesthetic with Poppins typography.