This is done because accurate dating for many developments is simply lacking. The existence of written or pictorial evidence indicates only that the development was probably created before that time. Comments, corrections, and additions to the material on these pages are welcome. They are most helpful if they include both references and details. Links to other web pages containing related information are also welcome.
Horse shoes become common.
Silkworms and the accompanying technology appear in Byzantium, though silk itself has been imported for hundreds of years. The breast strap horse harness appears in Europe. The stirrup arrives in Europe from China in the early 8th century. The heavy plow is in use in the Rhineland in the early 8th century. The horse collar first appears in Europe.