This interactive bar chart displays the top 10 most populous countries from the United Nations World Population Prospects 2019 dataset. Hovering over a bar reveals its exact population value in a tooltip. The visualization uses React with the d3.csv parser to load data, and d3.scaleBand and d3.scaleLinear to position bars. SVG rendering is enabled through the ReactJS framework, with d3.format used to format tick labels on the x-axis.