Answer:
The growth of inter-regional trade in luxury goods (silk and cotton textiles, porcelain, spices, precious metals and gems, slaves, exotic animals) was encouraged by significant innovations in previously existing transportation and commercial technologies--including caravanserai, compass use, the astrolabe, larger ship designs in sea travel--and new forms of credit and the development of money economies (Bills of exchange, Credit, Checks, Banking Houses, Use of Paper Money).
They helped guard against the possibility of strikes that would slow wartime production.
Their ethnicity / culture / nationality?
Answer: A historian studies each of the major world powers between the years 100 BCE and 100 CE
Explanation: your Brain