With a POD starting back to the first civilization, can you get an empire extending from the Atlantic coast of Europe or Spain to the Pacific coast of Japan, without going ASB?
Mongols got very close. Like, really really close. So that would be the way to go.
Does the Adriatic count as the Atlantic? If so then yes
If the Baltic counts, Russia did it too.
If you mean "must conquer France" then that's something completely different.
Something like the following map.
http://i.imgur.com/vO9Dc0f.png
It could go through Russia, but more warmer climates might be more successful.
I wasn't considering the Baltic, so basically all the way through France and to Portugal.
Something like the following map.
http://i.imgur.com/vO9Dc0f.png
It could go through Russia, but more warmer climates might be more successful.
Mongols got very close. Like, really really close. So that would be the way to go.
No they didn't. As in they literally didn't actually reach much of Europe anywhere near the coast of Europe.
I'm presuming the OP means to the Atlantic thru France and Spain, not just the Baltic or Med. Mongols are the only realistic non ASB possibility. And it wouldn't last very long. All of Eurasia is just to big for a single pre-industrial empire to hold onto more than several decades.
No, it would never get anywhere in the first place. The mongols never had a chance nor inclination towards conquering all the way to spain. Let alone the fact it would be a disaster.
The Mongols never had manpower concentrations in the West the way they did in China, I suppose some hypothetical steppe horde centered around Southern Russia could maybe do it. The Huns for example.
Mongols did have the manpower - they used other steppe tribes, conquered/subdued on the way...
Uh uh.
Jochi Ulus never had more than a fraction of what the Mongol Empire had in the invasions of the 1240s.
It might be a function of the Western Steppe being generally colder, but they also didn't have enough population close enough to stage continuous wars against Europe.