Two reasons as to why Alexandria became a center of Hellenistic culture was due to its location which was at the mouth of Nile river therefore trade was lively. Alexandria had also a large population. These people were from many different countries, such as Greece, India,Persia, and Egypt.
B, founded the Niagara Movement
Nomads is the right answer.
Anyone who moves from one place to another rather residing in one place is called the nomads. There can be many reasons for the migration of the nomads such as herders change places because of the weather( that is not suitable for their animals). whereas, other nomads including that of the traders and merchants, travels move for exchanging of their goods.
