Answer:
Because they do not want people to fear events like this no longer!
Explanation:
 
        
                    
             
        
        
        
Civilization in each region developed advance math,science, and engineering.
 
        
             
        
        
        
A amendment can be proposed By the Congress
        
             
        
        
        
Answer:
Lenin established free education across Russia after the revolution. Children were taught communist beliefs, but they were also taught about the rest of the world. Another benefit was that Lenin established the eight-hour workday, which significantly improved working conditions.
Explanation:
 
        
             
        
        
        
 Manchuria is your answer :)
Which is B on plato :)