Or in other words, what would these countries (Sub-sahara Africa, India, certain South America/Caribbean countries) look like if Europeans never colonized? Would they be happily living within the means that their area can provide them? Would they be over populated and in need of aid like they are now?
Hi there! There's always room for more answers, but we have some information in our wiki/FAQs that can get you started. Many similar questions have been asked here, and here are some notable threads.
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https://www.reddit.com/r/AskHistorians/wiki/africa
https://www.reddit.com/r/AskHistorians/comments/2c4lni/why_is_colonialism_responsible_for_terrible/ (11 months ago, 22 comments)
https://www.reddit.com/r/AskHistorians/comments/1jax1a/what_was_the_economy_of_africa_like_before_and/ (1 year ago, 7 comments)
https://www.reddit.com/r/AskHistorians/comments/1oaimh/ama_history_of_british_india_colonial_era_to/ (1 year ago, 194 comments)
https://www.reddit.com/r/AskHistorians/comments/1sxz17/i_have_seen_several_blog_posts_expressing/ (1 year ago, 55 comments)