Changes in the economic conditions and in some cases the religious laws of Europe led to what was one of the largest human migrations – movements of people from one part of the world to the other.

经济条件的变化以及在某些情况下欧洲宗教法的变化导致了最大的人类迁移之一——人们从世界的一个地方迁移到另一个地方。