I know of the Aztec, Mixtec, Olmec, Incas, Mississippian, Zapotec, Puebloan, and the Caloosaa/Kaloosa; but are there potential others? I've heard theories about potential Amazon civilizations which sound exciting, and makes me curious about if other societies are thought to have exist, but aren't fully researched. I don't mean anything along the lines of ancient alien style theories either... I mean theoretical societies with a little more potential for research.

I'm just curious, as I recently moved from the UK, where the healthcare is free at the point of use, and I'd love to know some of the history behind it!

I'm talking about anxiety, multiple personality disorder, depression, that sort of thing that would affect you socially. Did people as far back as Neanderthals have these issues, or did they even exist then without the current social construct?

I was just reading The Earth Encompassed: A History of the Environmental Sciences by Peter J. Bowler and he discuss whether or not the "new emphasis on observation" was the "foundation" of the scientific revolution.

The main case against this notion was that the study of the earth and its inhabitants did not experience dramatic improvement in explanatory power that we can associate with physics and astronomy, and that the biological sciences did not have a Galileo or Newton.

But there's no real answer posed as to why the biological sciences did not have their "godfather" during the renaissance, so if anybody had an answer or suggested reading for this question that'd be appreciated :)

I already know they banned the use of Nazi imagery in post-WW2 German. What other measures were taken in Germany, Austria, Czechoslovakia etc. ?

I understand that the Byzantine's were essentially the continuation of the surviving Eastern Roman Empire during the " dark " ages. However, who made up the empire? More specifically, who made up the capital of Constantinople? Were they Greeks? Turks? Romans? Or whom?

Looking at their artwork and statues they clearly had a highly idealized vision of the male body, very similar to any magazine cover or things you find online today.

I feel like I never know how to properly word these types of questions

I would imagine when the sensation of fast motion was new to people, many would react negatively to the unfamiliar turbulence.

I was reading an alternate history story partially about the Russian space program. It makes reference to them using tubes in 1962 (1962 being before the history diverged in the novel's universe)

EDIT: Sorry about the misplaced 'former'. I meant the latter (Stalin).

I never really understood this. My own understanding on why communism failed is because the people running the soviet union were selfish and a bit crazy, killing a shit ton of people for having different opinions and stuff.

Can someone shed a bit more light on this for me?

QUESTION: Why did communism fail and how could it have succeeded?

I'm aware of the fact that Denazification most likely quelled any serious attempts at reviving National Socialism, but were there any underground movements trying start the Third Reich up again? Sure there's Neo-Nazism, I'm more curious about revival attempts from people who were actual Nazis during WWII.