This bar chart displays the population of Sub-Saharan African countries in 1950, using data from the United Nations World Population Prospects 2017. The visualization customizes both axes: the y-axis removes its domain and tick lines for a cleaner look, while the x-axis formats population values with d3’s `format('.3s')` and adds negative tick sizes to create gridlines. Built with d3.scaleBand and d3.scaleLinear, the chart renders as SVG rectangles with a steelblue fill and includes a title and axis label.