source: https://www.reddit.com/r/dataisbeautiful/comments/sxcqdt/oc_the_democracy_index_a_index_that_scores/
source: https://www.reddit.com/r/dataisbeautiful/comments/srpv7d/oc_how_wikipedia_classifies_its_most_commonly/
source: https://www.reddit.com/r/dataisbeautiful/comments/t1v6zh/shaded_relief_map_of_ukraine_oc/