He was criticized for teaching men.
        
                    
             
        
        
        
The right answer is: The Americas :)
        
             
        
        
        
I think the answer might be the second one but t let me know if I am wrong
        
                    
             
        
        
        
The factors that made it difficult for Eastern Europe to improve its water quality were outdated sewer systems, raw water quality, worn-out water utilities and unskilled employees. So we can say that four options given in the question fits the bill perfectly. These basic infrastructural reasons were responsible for being a hurdle towards improving the water quality. <span />