Which of the following was an important continuity in the social structure of states and empires in the period 600 B. C.E to 1450 C. E.

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement

there are many answers to this question, such as a diplomat, ambassador, soldier, united nations employee, cia, etc.

the policy of appeasement influenced the beginning of ww2 because hitler gave the other countrys chocies but after they choose to try and appease hitler to not invade their country but he still invaded them.

the answer is alexander graham bell.