It lasted 35 years and $345
No, I believe that multiple weaknesses in the Articles of Confederation would have hurt America in time. One of the biggest problems was the lack of detail and specific attributes that the Constitution brings from long discussion and debates over what is best for the country. America needed to strengthen it's central government if it wanted to get anywhere, so we may not have become so powerful if we left the majority of the power in the state's hands. Another lacking component was the fact that we had no Executive branch to enforce Congress' laws and no National court to determine the meaning of the laws. Another example is the making of one currency for the entire country. These examples and more could have hurt America if they wouldn't have written the Constitution.
For number one I'll say either A or C and for number 2 I'll say either A or B
This depends somewhat on what you classify as "west," but generally speaking, yes, this is true, since it was in Ancient Athens that the first democracy was formed.
The answer is B - they wanted it for trading