The Hulk vessel was invented in the early medieval period - it was a sea craft that is known as the predecessor of the more advanced carrack and carvel vessels.
A Knarr was a vessel used for cargo storage - it was a cargo ship that had a wide hull and was deeper and shorter than the standard longship. The reason for this was for it to store more cargo and for much smaller crews to operate it.
Amazing facts about the Roman Empire, including the naming of the colosseum, the taxing of urine, and the worst punishments that were handed out to criminals.
People in the middle ages had it rough, the early medieval period from 5th to 10th century was so messed up that people came up with the term "Dark Ages" but, that did not stop them from enjoying the fun part of life.
Typography was invented twice: once in China and Korea and in medieval Europe. In China, printing was invented, according to some data (Julien, "Documents...