Answer:
Central government should be allowed to impose taxes.
Explanation:
It should be allowed to impose taxes, because, there are certain projects, that only a central government can efficiently oversee and fund. Example:
- army to fight foreign powers
- any projects that benefits the country as a whole AND at the same time, benefits some states more than others. Example: continental railroad benefits the whole country, BUT you have to say, that some states get more benefit than others. 
 
        
             
        
        
        
Diyala,Anbar and Samarra 
Easy! Hope this helped
        
             
        
        
        
Answer:
They have kept the country intact 
Explanation:
I think this is a very interesting question. In my opinion, I think they have kept the country intact, look at it this way. Political parties means that there exists choice for the people. Absence of political parties makes it a 1 man ruling without the necessary checks and balances. Like in that of a monarchical ruling t, or military ruling. Essentially, one can do and undo as one wishes.
Now, the advent of political parties brings choice, meaning the people can choose. In a situation where party A doesn't fulfill its political campaign promises, they are at risk of being voted out by the people for party B. Party B themselves won't sit down idle, while not in power, they wake the people up to the wrongdoings of party A. 
Like I said, the presence of political parties brings choice to the people, and also creates checks and balances. So, yes, they have kept the country intact.