The correct answer is C, They gave the national government control over domestic affairs of the states!
The use of standard currency/coins help the economy of the Roman Empire because Roman coins were often used as tools by Europeans to circulate various forms of news and propaganda to the people and the world.
The correct answer is The aging of the population
Explanation: In this case, knowing that the aging of the population is extremely important for the area in which she will work, because you need to know what your audience is about before entering a branch. The main thing is to leave your target audience as well as its main characteristics.