Answer:empires long provided their citizens with stability in the form of large armies for protection, an increase in the trade of goods and ideas, and governments that enforced laws and justice.
Explanation:
Answer: For instance, if two waves are traveling at the same speed, they are inversely related. The wave with shorter wavelength will have a higher frequency while a longer wavelength will have a lower frequency. Frequency and wavelength can be related through the speed of light.
Answer:
<u>Citadel
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Explanation:
The citadel is a term that indicates the strongest fortified, usually the central part of a fort, a stronghold. A space located inside the city, yet separated. The term was derived from the Italian citadel in the early modern age, meaning "small town".
The citadel was often located inside or on the outskirts of the city and most often formed the last core of defense in a single fortress. Citadels from the early modern century, as a rule, had a regular polygon in the floor plan.
The collection and collation of original data via direct contact with potential or existing customers. It is also called field research.
