A Start: Caranus

The newcomers to the continent of Caranus arrived 214 years ago.  It was the single biggest migration in their history and it was one of the largest ever.  They way it was put forward to them was that they had to bring their entire society or no one would be welcome.  They had to bring not only the wealthy, the artisans and the trades people, but they had to bring the labourers and the beggars too.  It was the only way that the magical geas that surrounded the country could be breached.  The only way that had ever succeeded.  

Why this was so was told to their king quite boldly by a member of the race that formed the role of Guardians of Caranus.  The King was told that Fate knew that to bring less would bring failure, so they prevented any attempt at all.  After he proved his power, he then told that Emperor what he needed to do to accomplish the migration.  Simply put, the nation must devote the wealth of the empire into building three huge ships that were to be invested with the greatest magic that the nation could produce.  He told the Emperor, that the undertaking was so grand and so huge that the flotilla would only be ready at the end of his Grandson's reign.  Since he was still young and unmarried, this was a considerable promise, but the Guardian knew much as he could see between the paths of the future; he could see which actions would lead to ends that were disaterous and which actions led to great success.  

The Guardian lied to the Emperor.  He knew that if the resources were devoted to shoring up the King's Empire that it would endure for thousands of years to come, but if he did see to his empire and did not set in motion the Great Migration, the great Blue Sun Prophet would not be born in three hundred years and Caranus would not have her services in its needs.  No one thought to ask who the Guardian guarded.  He guarded the needs of Caranus,  a thousans of days across the great ocean; he did not care a wit for the Empire.

The tree ships were two and a half kilometers long and half a kilometer wide, contained twenty decks apiece.  The lives of hundreds of great mages had been poured into the creation of these three ships.  It was the minimum of space required for the people and the voyage.  Not the entirety of the population of the empire would have fit on the three ship when the construction was begun, but when the construction had been completed, the empire had been reduced considerly.  

Loading of the food and animals for the massive journey had stripped the land for many years.  After the ships had set out, the invaders that had shrunk the Empire for more than a hundred years, found a city of splendors whose lands could not support anything.  They found a shell and that is it, the three vessels already over the horizon.  

200 years after the Great Crossing, the last of the Great ships stood out on the waters in the morning light where it had run aground.  The magics on the hull remained potent still then.  The other two had been dismantled and used to build the new Empire.  The Large forecastle of one ship stood on the high hill peak and served as the castle of the King, the deck plates had been dismantled and arranged as the Imperial Road surface.  Lesser streets had to be content with woodden planks.  There was no stone for building in this new land, and no clay to fashion bricks, but there was plenty of great stands of trees and rain that fell every day from the sky.  The last day without rain happened over a hundred years previously and that day had snow.  The warm currents off shore brought more than a dozen meters of rainfall each year but also warmed the air so that the Winter, that lasted here eight years at a time, and cooled the Summers that lasted an equally long time.  

The Guardian was happy though, the Blue Sun Prophet had been born four years ago somewhere and was coming to the city soon.