This scatter plot uses a categorical vertical axis and a linear horizontal axis to display the population of the top 10 most populous countries in 2018. Built with D3.js v5 and React, it renders as an SVG, reading data from a local CSV file. The code uses `scaleLinear`, `scalePoint`, `axisLeft`, and `axisBottom` to construct the chart, with circles sized at a fixed radius of 18 pixels.