I think that is it safe to say (I mean by this: check if it's among your options) that both individual and international trade are voluntary exchange of goods -both parties have to agree on it without being forced to it. Also they should be mutually beneficial - otherwise the two parties would have have agreed!
Kevin is more likely to, because he is learning slowly about what he just learned thus making the studying easier and he will learn more throughout the year.
The German economy was very weak and needed a strong leader to unite them all under one cause. Another reason is they were angry that Germany had lost WW1
