Yes. there were more events leading up to the crash
Answer:
B I would say because they already used C and D so I just chosed the on that make sense
Since then the Great Wall was built, rebuilt to protect the northern borders of the Chinese Empire from the Hun's and Mongolian attacks during the rule of successive dynasties.
I would strongly suggest indaba. It allows each country to be heard and they can come to a conclusion quickly. They can only voice their opinion in a certain way. A country gives their Red Line in a diplomatic way and the other can respond with their hard limits.