What was necessary to foster the development of early civilizations

during the middle ages bibles and most christian literature was written in latin i think that’s the answer you are looking for

the united states broke it's neutrality was the constant german sinking of trading vessels resulting in the loss of lives, one example would be the lusitania.

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.