AH Tropes you want to see more of

TLs involving changes in culture as well as politics - alternate religious movements, political or economic ideologies, etc. A TL with an anarchist Spain, or a Technocratic US, or a transhumanist USSR.

I'd settle for known movements from our timeline having more success and endurance. What if Arianism survived the Middle Ages? What happens when the Nizari become the dominant strand of Islam, preaching "social justice, pluralism, and human reason"? What if the Neo-druids of the 18th and 19th century manage to inspire a mass ideological movement in the British Isles?

Another "trope" I'd like to see is alternate version of literary works appearing in timelines and having actual effects on a given culture. What if Washington Irving, Edgar Allan Poe, etc develop remain influential but the messages of their works are markedly different?
 
I would like to see more TLs where the North secedes at some point; It could have happened during the Burr era or the War of 1812, and I would love to see a Dominion of New England facing off against a Southern-dominated USA.
 
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