This example loads a CSV file of global population data and renders placeholder rectangles for each row. The code uses `d3.csv` to parse the data, logs each country’s name and 2022 population to the console, and appends empty, black-outlined squares to an SVG canvas. The rectangles do not encode any data values; the visualization demonstrates the basic workflow of loading and iterating over external data with D3, leaving data binding and scaling unimplemented.