TOEFL Reading: ETS-TOEFL阅读机经 - 8KOM61365AEY33ZVL$

Paragraph 4 discusses all of the following as reasons for the breakdown of the tribal leaders' monopoly in decorative metalwork manufacture EXCEPT A. the tribal leaders' reduced influence within their communities B. the effect of Roman culture on the elite's display of wealth and status C. the removal of gold and silver from circulation D. the Roman government's control of precious metals