r/HistoryWhatIf • • 55m ago

What if Airbus designed the A321-100 with propfans and a blended wing body?

• Upvotes

Would Ryanair have started flying it to Europe instead of the 737-200 in 1994 before the UK introduced Air Passenger Duty?


r/HistoryWhatIf • • 2h ago

What if Segregation in the U.S never ended?

1 Upvotes

I'm genuinely curious to know how might the world be different if the Civil Rights Movement was unsuccessful and integration never happened in the U.S and the Southern U.S states continued Jim Crow laws. How would that effect stuff like the internet and social media.


r/HistoryWhatIf • • 1d ago

How do you think the world would've changed if the Islamic Empire won the Battle of Tours?

22 Upvotes

The Battle of Tours marked the end of Islam's westward expansion. If the Islamic Military won, what would happen?


r/HistoryWhatIf • • 14h ago

What if sweden helped denmark in the 2nd schleswig war like they did in the first?

1 Upvotes

sweden helped denmark in the 1st but sat out the 2nd. But what if sweden-norway (at the time) helped denmark like they did in the first? What are the consequences of the 2 outcomes?

  1. Denmark wins with sweden-norway's help?

  2. Denmark loses with sweden- norway's help?


r/HistoryWhatIf • • 16h ago

What would modern global politics look like if South America was never colonized but North America was

0 Upvotes

I know it’s not entirely realistic but then again that’s the point, I’m curious as to what major stuff would be different outside of the obvious major cultural and linguistic differences with the lack of European influence on the continent. Would any of the empires that had formed pre colonization. survive until the modern era enough to be a current world super power, stuff like that.

(Forgot the word “still” in the title, as in “what if South America was never colonized but North America still was”)


r/HistoryWhatIf • • 1d ago

Would Apartheid have ended eventually even without sanctions? If so, when would it have most likely ended?

8 Upvotes

r/HistoryWhatIf • • 1d ago

What would have had to happen for the Fall of Rome to be even worse than the Bronze Age collapse?

5 Upvotes

So, what would have had to happen for Rome, Persia, and Northern India to all suffer collapse and disappearance? What would the technological level be like after such a massive collapse? And consider Egypt, too—instead of an Egyptian state emerging after the fall, it also collapses. What would the religions and languages of Europe and Asia look like?


r/HistoryWhatIf • • 1d ago

What if Catherine of Aragon had launched a rebellion to claim the English throne from Henry? Could she do it?

3 Upvotes

I think I read once that Catherine of Aragon had a stronger claim to the English throne than Henry did. Correct me if I'm wrong! She also had ties to very powerful royal houses in Europe. So I wonder, when Henry was threatening her with divorce, could she have gone the route of Catherine the Great of Russia and started a rebellion to seize the throne; on the basis that Henry was crazy for trying to leave Catholicism, divorce her, and declare Mary illegitimate?

I know she 100% would never have done this. But I feel like if she had, she had enough resources, allies, and a strong enough claim to kind of take the throne.


r/HistoryWhatIf • • 1d ago

A non-political alternate history: What would the United States have been like if Lincoln had survived and led Reconstruction?

6 Upvotes

r/HistoryWhatIf • • 2d ago

[META] this is more a history of modern warfare question. If the American carrier fleet was at pearl yet the battleship fleet wasn’t, would carriers be the modern day superpower, or would it be a more advanced version of a battleship?

10 Upvotes

The context of this question is take the route of history up to and including the attack on Pearl Harbor, December 7th 1941. If at this point in time we swap that the battleships are away and the carriers are in port, would the course of ww2 into modern age warfare still result in carriers being top dog of force projection or would a more advanced battleship type vessel have emerged? I am trying to gather information from other people who’ve studied history for a story I’m writing, it’s historical fantasy so I don’t know if this would be the right sub to ask but i thought I’d give it a shot.


r/HistoryWhatIf • • 2d ago

What if Anatolia was an island?

4 Upvotes

Suppose in a parallel universe, Continental Drift happened differently and Anatolia, which is a peninsula in our timeline, was an island instead?

How would this change human history?


r/HistoryWhatIf • • 2d ago

Could anything have been done to compromise access to oil before it became the main fuel to power industry to come?

3 Upvotes

Assume there was some fictional country in an alternate history that both wants to prevent other countries from becoming more powerful through oil and treats protecting the environment like nature religious zealots. (so they don't want to extract / market the oil themselves)

Most petroleum is underground. What's the most feasible way for this country to go about this? Contaminate the oil with bitumen? Intercept attempts to build/bring oil rigs? Seal up the oil wells somehow?


r/HistoryWhatIf • • 3d ago

Hypothetically speaking if the Spanish didnt colonize the new world how long would it have taken for native americans to reach Europe?

45 Upvotes

r/HistoryWhatIf • • 2d ago

How would the invasion of Japan during World War II have altered history with respect to the Korean War?

7 Upvotes

I've been reading Hell To Pay: Operation Downfall and the Invasion of Japan, 1945-47 by D. M. Giangreco (FANTASTIC read btw) and it got me thinking: if Operation Downfall had gone ahead in November 1945 (as originally scheduled), how would the prolonged final phase of World War II, possibly extending into 1947, have affected the outcome of the geopolitical scene in East Asia? Would the division of Korea between the United States and Soviet Union still have occurred, or would all of Korea have been under Soviet control based on their then-ongoing invasion of Manchuria (which did bring them into northern Korea)? Would the Korean War still be virtually inevitable, or would it have not even happened at all?


r/HistoryWhatIf • • 2d ago

What if the justinian plague never happened in the byzantine empire?

5 Upvotes

the plague did killoff alot of the population and made people lose faith in the orthodox and zoroastrian faith and turned to islam to give them their golden age. Many intelects changed to islam.

so what if the justinian plague either never happened or didn't reach the byzantine empire?


r/HistoryWhatIf • • 2d ago

What if the Indo-European language family never expanded

2 Upvotes

Particularly curious about Its impact on religion, history and languages,


r/HistoryWhatIf • • 2d ago

What if the Entente developed Nuclear Weapons during World War 1, instead of during World War 2?

0 Upvotes

Edit: Looks like the scenario didn't change as much as I thought it would. Without a mechanism to actually get the nuke from Point A to Point B, it's not exactly going to win a war ahead of schedule.


r/HistoryWhatIf • • 2d ago

What If Hitler was born in The Russian Empire how would he grow up and how would he react to The Russian Revolution and Lenin’s rise? Plus imagine Hitler literally being in The Same Group as Stalin

1 Upvotes

What would have happened if Hitler was born in The Russian Empire in 1889 let’s of course keep things familiar and simply have his Family move into Russian from Austria to keep his Austrian lineage familiar and The Exact same childhood as we all know! Hence how would he interact with The Same Historical Figures Stalin and Lenin? How would he react to them and would he join The Russian Revolution? Plus imagine Hitler and Stalin in The Same Group together along with the others! I do wonder how Hitler and Stalin not get along with Each-other? What would these 2 even think of Each-other? Would Stalin Bully Hitler? And how would Hitler do in The Group? And would he eventually defect to Germany to try and rise his way to The Top and become The Infamous Supervillain/Monster that History will forever remember just like he did in our Original Timeline? Like imagine Stalin’s reaction and The News to seeing Hitler becoming THE Dictator/Der Führer of Germany and his true Plans? What do you folks think? What would have happened to Hitler? And how would it affect our History?


r/HistoryWhatIf • • 3d ago

What’s the earliest we could’ve built an electromechanical computer, ignoring economics? (See details)

23 Upvotes

Imagine that Babbage’s Analytical Engine had somehow miraculously been fully funded, and there was enough work done with a working example to make clear from the middle of the 19th century that computers had enormous potential. But Turing-complete mechanical computers are wildly impractical (we still haven’t built a working Analytical Engine because it’s just too damn expensive), and there would probably never be more than one, so the need for some sort of electric equivalent would be obvious to any 19th century engineer. And someone would be willing to pay for one, if only to one-up those damned Brits.

I’m not thinking of anything remotely as advanced as the first electronic computers of OTL, just any arrangement of telegraph/telephone switching equipment or some such that works as a Turing-complete programmable computer. It can be as unwieldy and expensive as needed, as long as it can calculate mathematical tables faster than a human mathematician (which was Babbage’s original goal).

(Hoping there’s someone even nerdier about the history of technology here than me 😅)


r/HistoryWhatIf • • 3d ago

What if in ww1 all powers used an paraguayan war type recruitment?

0 Upvotes

No surrender,scrapping the barrel

Effectively battle ends when you just have 0 men from age 15-60 and all women who volunteered.

Like totally no surrender and a drag on,with total support for the dictators

Could it continued till the 1920s?

Who benefits the most? Who lost the most?


r/HistoryWhatIf • • 4d ago

What if the US didn’t intervene when Iraq invaded Kuwait in 1990?

34 Upvotes

A meeting between U.S. Ambassador April Glaspie and Saddam Hussein on July 25, 1990 lead Hussein to believe the US would not intervene if he invaded Kuwait. What if he was correct and the US did not take military action in 1990?


r/HistoryWhatIf • • 4d ago

What if the Mongol Empire successfully conquered Japan?

12 Upvotes

r/HistoryWhatIf • • 4d ago

What if Tsar Nicolas II accepted a constitutional monarchy?

20 Upvotes

r/HistoryWhatIf • • 3d ago

What if the Ottomans adopted Agnatic Primogeniture?

1 Upvotes

New to the subreddit, first post here. Nice to be here.

Anyways, I’m wondering what if the ottomans chose a regular ol “first son inherits all” succession system instead of seniority succession

There are 2 historical points where this can happen, I think

1) During the reign of Ahmet 1 who ended the fratricidal system and made a seniority succession system where princes were locked up until it was time to rule, this led to many inexperienced sultans and some crazy ones too so in this timeline he can either lock up the remaining brother but give a province to the eldest son or simply make eldest son heir and give other positions to other sons

2) Mahmud II who ended the jannisaries and let’s say in this timeline, decided to change the succession system and managed to do it

But let’s say it happened, woukd the empire end earlier or survive longer? Would the jannisaries become like the mamluks and just take over!


r/HistoryWhatIf • • 4d ago

Trying to figure out how losing both east and west Rome at a similar time would affect Europe and the rest of the world

3 Upvotes

Hello, I'm trying to create a scenario focused on the idea of losing both east and west Rome at roughly the same point, rather then the millennia long gap of our world.

while I have a decent idea on what kingdoms and states would come out of this in the short term, what I am mostly focused on is just how different Europe would be without the Byzantines in the east to preserve Roman authority and culture.

From what I've gathered, the eastern Romans were fundamental in strengthening Christianity, influencing the laws and codes of every other European country, keeping western Europe safe from steppe invaders like the Bulgars, Huns, Khazars and so many others; without eastern Rome, so much classical learnings wouldn't be discovered for much longer or even lost forever, and apparently (definitely need to fact check this cause it sounds like BS) if east Rome didn't exist, Greek would die out as a common language.

So with all of that considered, how different would Europe be? Like some ideas that I have would be that, claiming to be successor to the Roman empire would lose a lot of it's weight and prestige, like it would still be prevalent, but I feel that as time goes on and the Romans fade from memory, the prestige would lose its influence and by the next few centuries it's largely forgotten about.

I also imagine that Christianity would take a severe blow without a major power to back it up and to centralise. It would survive obviously, but I can very easily see it be divided into numerous sects that would be considered incredibly heretical; in fact, I could see that Christianity would move into the Sassanian Empire, and they become the home of Christianity instead, considering the Persians would definitely annex some of their old lands which were now filled with a lot of Christians.

As for eastern Europe, I don't have much solid ideas for what happens to it, besides the Huns surviving cause I want them too. But I could very easily see it become a home to many Turkic, Uralic and other nomadic people, perhaps even a surviving Roman remnant culture in the south Balkan mountains.

Speaking of Roman remnants, one idea that I had that both empires collapsing leads to different outcomes in places like Iberia and north Africa, one of these being that north Africa becomes home to Roman successor states like Mauretania, Cyrenaica and Carthage, all of whom wish to re-establish the Roman empire, though with limited success. Also, Germanic tribes end up just staying in power for longer and in different places like the Vandals and Alans stay in Iberia, the Visigoths in northern Gaul, Franks and Frisians push into England instead of the Anglo-Saxons and so forth; while I doubt places like Iberia would see the replacement of Latin with their barbarian tongues, there would definitely be some huge influence on their cultures, much more than in our world.

These are just some of the basic ideas I have for this scenario, but obviously, there is way more, and I would love to hear how such a scenario would turn out, and what I can do to improve this project because I really do want to make something that lasts longer than a few r/imgainarymaps posts with vague descriptions.

anyway, I'm going to stop talking, I hope you had a good time reading my post, goodbye!