I have no idea i have gone over it 20 times and believe me this one is hard but in the lesson its probably the answer i know you can do it
 
        
                    
             
        
        
        
Answer:
The invention of the printing press by Johannes Gutenberg.
Explanation:
The invention of the printing press by Johannes Gutenberg allowed new ideas to spread more quickly around Europe. The discovery of America by Columbus meant that new foods and medicines were brought back from the New World.
 
        
             
        
        
        
The significance outcome of the Russian civil war is that The red army won this war