To keep out Northern savages. I think :P
The Supreme Court must approve it before.
The economy may be great as other countries had to pay a lot of money due to having to borrow money and also guns, weapons and other supplies however it might be negative because a lot of money was sent by them to help Britain and France
Answer: trenches. WW1 is famous for its trench warfare- a dangerous form of warfare that resulted in a lot of deaths as stalemates lasted for months.
I think is A Monarchy system?