The role that the silk road had on other civilizations is that since the silk road was a major trading point many people from many different civilizations would go there to trade their goods, especially the Chinese. The Chinese had something nowhere else did they had silk and spices and people would pay very high for those two goods.
They made legislation with other countries that regulates their use and they build large bomb shelters
Your answer is Enslaved Africans.
Hope I helped;)
The prisoners in Nazi concentration camps had to move a lot from camp to camp, as Allied soldiers were coming to liberate them. In order to not get caught, everyone in the camp had to leave and go to another one. If this is not correct, let me know please.