This bar chart shows the top 10 highest income tax states, using population values as a proxy for tax-percent of income, with data from the 2018 United Nations World Population Prospects estimate. The visualization emphasizes customization of D3 axes: a linear x-axis formats tick labels using `format('.3s')` to abbreviate numbers like billions, and the y-axis removes its domain and tick lines for a cleaner look. The code uses `d3.scaleLinear`, `d3.scaleBand`, `axisBottom`, and `axisLeft` within an SVG rendered via D3 v5, pulling data from a local CSV file.