The answer would be B: The western front became a stalemate.
 
        
                    
             
        
        
        
Answer:
Explanation:
Near the end of the Ming Dynasty in 1616, Manchurian forces from northeastern Asia defeated the Ming army and occupied several cities on China's northern border. A full-scale invasion followed. China was defeated in 1644, with Emperor Shunzhi establishing the Qing Dynasty
 
        
             
        
        
        
Answer:
It required fewer people to produce goods
 
        
                    
             
        
        
        
Answer:
the answer is number 2
Explanation:
the Egyptians created a simple deadbolt with wooden pins that secured the bolt
 
        
             
        
        
        
Answer:
True
Explanation:
The process is responsible for most of the world's oxygen supply