Hello. You have not shown the sources to which this question refers, which makes it impossible for the question to be answered accurately. However, I will try to help you in the best possible way.
A source that helps you to visualize a moment well, is one that presents a highly descriptive language that presents a large number of adjectives that inform you of many characteristics of that event, thus allowing you to form a mental image of what happened. Therefore, you should look for this type of language in your sources to find out which is the most efficient.
Answer:
Correct answer is C. They were pushed out of their own territories by nomadic groups.
Explanation:
The only correct option is C as the Germanic tribes of Vandals, Ostrogoths, Visigoths, Franks and many other were pushed during the Great Migration by the Huns in 375.
They settled on the soil of Roman Empire, destroyed its western part and created many countries on their own.
It’s first one beat when you feel it and turns to mass
The answer is push theory, it is because a push theory is a means of having something for an individual to strive or to be motivated into reaching his or her goal; for it to be considered as a pull theory, the individual should move on its own without having any rewards or factors moving him or her to a certain goal.