A bare minimum HTML page demonstrating use of CSS and JavaScript.

See also React Starter.

Resources:

https://github.com/scotthmurray/d3-book/blob/master/chapter_14/05_choropleth.html

Data cleaning using python. repo is below

https://github.com/seansanchez951/CS-360-Assignment-9-csv-data-cleaning/blob/main/CS360%20-%20Assignment%209%20Choropleth%20Data%20Cleaning.py

Colors derived from ColorBrewer, by Cynthia Brewer Color type: 5-class greys

https://colorbrewer2.org/#type=sequential&scheme=Greys&n=5

json data found here

https://raw.githubusercontent.com/PublicaMundi/MappingAPI/master/data/geojson/us-states.json