Answer:
I think it's Gutenberg's press.
Hope it helped.
False because world war 2 wasn’t in the 1800
The immediate causes of the Hundred Years War were the dissatisfaction of Edward III of England with the nonfulfillment by Philip VI of France of his pledges to restore a part of Guienne taken by Charles IV; the English attempts to control Flanders, an important market for English wool and a source of cloth