The mongols invaded china with the intentions of having china under the Mongol Yuan rule.
        
             
        
        
        
Answer:
A
Explanation: 
I have read this before. =)
 
        
                    
             
        
        
        
The correct answer is true
        
                    
             
        
        
        
Answer:
I think the answer is  B- knowing the ways that humans use Earth's natural resources
 Hope that helps!! :) :)