This stylized bar chart displays the top 10 countries by their 2020 population, sourced from a UN dataset. It uses a horizontal bar format with a styled dark teal fill and a clean, modern design. The chart is built with React and D3 v7, using `scaleBand` for the y-axis, `scaleLinear` for the x-axis, and SVG rendering. Population values are formatted with a custom tick label function that converts large numbers to a readable "B" suffix for billions.