Maximum borders oooooffff

Some countries and empires could have had much more territory than they actually had.

With a PoD before 1900, what could be the largest possible extent of the following empires, and if possible, have them survive till modern day:

Napoleonic France
Roman Empire
Qing Dynasty
Majapahit
Mauryan Empire
United States
Mexico
Gran Colombia
Argentina
Greece
Russian Empire
British Empire (lol)
Spanish and Portuguese Empires
Byzantine Empire (Rome excluded)
Republic of Venice
Polish-Lithuanian Commonwealth
German Empire/Holy Roman Empire
Any Scandinavian union
 
Wait, all of these countries' maximum borders and surviving till the modern day...co-existing all at once?
 
Well, I did say these countries could retain their borders 'if possible'
And no, they do not need to exist at the same time
 
The US could have managed to annex Vancouver BC instead of the UK doing it .Or during the Mexican-American war they could have taken Baja along with the rest of their OTL winnings .
 
Some countries and empires could have had much more territory than they actually had.

With a PoD before 1900, what could be the largest possible extent of the following empires, and if possible, have them survive till modern day:

Napoleonic France
Roman Empire
Qing Dynasty
Majapahit
Mauryan Empire
United States
Mexico
Gran Colombia
Argentina
Greece
Russian Empire
British Empire (lol)
Spanish and Portuguese Empires
Byzantine Empire (Rome excluded)
Republic of Venice
Polish-Lithuanian Commonwealth
German Empire/Holy Roman Empire
Any Scandinavian union

Napoleonic France- extends to al ine from the White Sea to the Caspian and includes all of Europe to the west , plus Louisiana, all of Spain's and Portugal's areas in Latin America, non-Brit colonized Africa and the Middle East and Indochina.

United States- All of North and South America plus Greenland

British Empire - a world State by the 1950's after the union of the Brits/Germans/Russians though strategic royal marriages between 1890 and 1910
 

Saphroneth

Banned
Britain's the hard one to expand because it was already bloody huge post-WW1.
There's still more to squeeze out, though... Franco British Union!

If that took place, then at some point you'd have the (Franco) British Empire, ruled from London because Paris is still under German occupation, controlling all of the British Empire and all of the French one (sans l'hexagon).
Which comes to..

46.2 million km. (Low estimate)

This is a huge value and it's hard to plausibly get much more without a major structural change to political relations, since it effectively merges two entire colonial empires. It's actually larger than the totality of the Americas!
 
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I could see a better prepared Greek army doing far better in WWI than OTL and taking everything from Constantinople to the north to most of Cyprus in the south .They could also take huge chunks out of Bulgaria and Ottoman empire as well but that might be pushing it .
Are you talking about realistic max extents or could we include some ASB ?
 
Mexico - a less-bloody war of independence that also results in a stable nation, much like the United States produced, would have been a Mexico able to hold onto most of its original borders. The northern extremes probably would have been nibbled away over time by American settlers - hard to convince Mexican settlers to move that far north - but Texas and Southern California are entirely plausible to hold, and then the desire for railroad lines ties up most of the current American Southwest.

If the repeated civil wars can be avoided and good relations are maintained between *Mexico and *USA, both could easily have become superpowers.
 
A maximum, vaguely recognizable U.S. could only really expand northward to include Canada and Greenland.

I have not seen it done, but it would be interesting to have a greater Mexico done with a POD of the Gadsden Purchase not taking place, thereby having a slightly further north border than in OTL, while also reconquering the states of Central America north of Panama.
 
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