Countries and their population
This visualization displays the total population of countries using bar and scatter plot overlays, with data from a local CSV file. Users can sort the bars and circles in ascending or descending order via buttons. Built with D3 v5, it uses `scaleBand`, `scaleLinear`, `axisBottom`, and `axisLeft` to render the SVG, while transitions animate the reordering and tooltips on mouseover reveal country and population details.