Answer:
https://history.state.gov/milestones/1961-1968/cuban-missile-crisis
Explanation:
This might help.
 
        
                    
             
        
        
        
The cheap labor in the form of slaves. 
        
             
        
        
        
The founding of Rome can be investigated through archaeology but traditional stories handed down by the ancient Romes  themselves explained the earliest history of the city in terms of legend and myths.
        
             
        
        
        
Fox talbot - <span>Photographs
isaac singer - </span>Sewing machine
<span>Etienne Lenoir - <span>Gasoline engine
</span></span><span>Alfred Nobel - <span>Dynamite
</span></span><span>Wilhelm Roentgen - <span>X-rays</span></span>
        
                    
             
        
        
        
The Nazi's created concentration camps all over Europe in order to carry out Hitler's "Final Solution." Hitler's "Final Solution" was based around exterminating all European Jews. In order to do this, he developed concentration camps in which systematic killing took place. 
These killings took on several different faces. This included extermination chambers, mass shootings, and cremating individuals. These extreme acts of physical violence resulted in the death of millions of European citizens.