There's a saying that the mountain range is like the continent's spine.
To easily understand this saying, imagine finding a dinosaur fossil underground.
Think of the continent as one dinosaur lying dead with a slightly curved back.
First, where the dinosaur's flesh and meat were has melted away, leaving only traces.
That's the land and the boundary between continent and sea.
The head faces right, roughly east.
Then that huge skull could be said to be the great forest in the eastern continent.
The kingdom encompasses the area from that head to the neck meat.
The body's delicious rib meat area is the Empire.
As meat from ribs is traditionally delicious, the Empire's continental territory was particularly fertile.
Isn't that why long ago a man succeeded in declaring himself emperor and took the Empire's name?
While the Empire is indeed the strongest nation, that doesn't mean the Empire owns the continent.