Answer:
Some of the negative impacts that are associated with colonization include; degradation of natural resources, capitalist, urbanization, introduction of foreign diseases to livestock and humans. Change of the social systems of living. Nevertheless, colonialism too impacted positively on the economies and social systems.
 
        
             
        
        
        
<span>Sudetenland is Czechoslovakia which has now been separated in to two countries, Czech Republic and Slovakia, even to this day a few Germans still live just of Celeb. There are people who are still finding out that they are in fact German and not from the Czech Republic.</span>
        
             
        
        
        
It is most likely because he believed that they could cause unnecessary conflict... that is just my educated guess