This began in 1150 but it would last until at least 1200 (447 AD). It was named the flood because of the vast amounts of people going into these new lands, looking for furs, money, a new life, resources, and any number of other reasons. The Tachibana and the Minamoto Shogunates that appeared at this time were the largest in the beginning of this era but there were others arriving and establishing new Shogunates on the coast of the new continent.