they might have felt they were treated unfairly
 
        
                    
             
        
        
        
Answer:
The Tigris River formed the northern-most boundary of Mesopotamia. The Euphrates River formed the southern-most boundary. Both rivers flowed from the north to the south east, emptying into the Persian Gulf, which formed the eastern border of Mesopotamia.
Explanation:
 
        
             
        
        
        
The lease he entered is called<u> estate at will</u>. 
Estate at will, also called <em>tenancy at will</em>, is a property tenure without lease or wriiten argeement, and it can be terminated at any time by either the tenant or the landlord. It does not have a contract, therefore it does not specify a time limit. 
 
        
                    
             
        
        
        
Letter D is the correct answer.
In order for minors to participate in research, <u>there is no need of documentation of minors' assent. </u>Federal regulations only require voluntariness and informed consent; the subjects have to participate in research by free choice and be adequately educated about the study they are participating in.    
 
        
             
        
        
        
The best and only
answer to your question is
D) question
and answer.
The
Greek philosopher Socrates is known for the Socratic Method of teaching, which
relies heavily on question and answer.
 
 
Hope my answer would be a great help for you.
 
 
<span> </span>