This bar chart visualizes the population of ten countries in 2010, using a horizontal layout where encoded bars extend rightward from a common baseline. Built with React and D3 v5, it renders vector graphics as SVG components, importing separate ES6 modules for axes and marks. The chart reads data from a remote CSV file, uses a linear scale for the x-axis with a custom tick formatter that converts gigabytes to billions, and a band scale for categorical country labels. Each bar includes a native SVG tooltip displaying the formatted population value on hover.