This might be a bit meta, but, what is alternate history like in this timeline? What are some of the more popular WIs? Is the Second Great War as popular as WW2 IOTL?
Speaking of which, what conflicts get the lion share of focus in American academic media? IOTL, the Revolution, Civil War, and WW2 get alot of the focus, but what wars get most of the focus in US media ITTL?
In TTL, the alternate history genre is referred to as spec fiction. Spec fiction emerged in the 1970s in TTL, and was heavily influenced by American Nihilism.
Doctor Lexington, by Greg Bliss, aside from being the first commercially successful spec fic, was also a very bleak dystopia (the plot and setting of
Doctor Lexington is arguably similar to what would happen if you combined the setting of
The Man in the High Castle with the plotline and style of
Watchmen).
Greg Bliss wrote a number of other notable spec fics in TTL, with notable works including
The Grey House (think the setting of TL-191 merged with the respective plots of
Doctor Strangelove and
The Ruling Class) and
President Lincoln (written as a brutal mockery of Anglo-French utopian Happy Wave fiction).
British and French Happy Wave spec fiction emerged in the 1980s in TTL, and as the name indicates, includes works with utopian plots and settings, and arguably crossing over into wish fulfillment. The most famous novel from the Happy Wave is
President McClellan, which includes aspects that resemble OTL steampunk fiction.
Of course, by 2021 in TTL, the spec fiction genre has numerous writers, filmmakers, and game designers to its name.
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In 2021, the Second Great War and the Fourth Pacific War tend to get the most focus in the US media and popular culture, although the American Revolution is also well represented in US culture.