The commercial revolution of the last millennium B. C. resulted in both political and economic changes. A. New kinds of urban centers emerged that focused on commerce and encouraged craft and occupational specializations. B. Rulers in the last millennium began to promote the material prosperity of their people through support and improvement of commerce. C. More established commercial centers supplied final products to newer regions in exchange for raw materials. D. During the first millennium B.C., new political and religious centers arose that based their power on their ability to protect their lands and people. E. The focus on raw materials switched the balance of power from the manufacturing centers to the control of the exporters of the natural products. F. Military occupation of neighboring lands became a major means of expanding trade into new territories.