The correct answer is C) a quote of Hitler's announcement, D) the reaction of Jewish business owners, and E) the types of business he boycotted.  
<em>The details that would provide helpful factual support for this sentence are a quote of Hitler's announcement, the reaction of Jewish business owners, and the types of business he boycotted.  </em>
The sentence was: "Hitler announced a boycott of Jewish-owned businesses."
So it would be very important to have a direct quote from Hitler, stating the reason why he made that decision. Another aspect is the type of business the decision affected and how impacted to the Jewish people. Finally, another important aspect would be to know the first impressions and opinions of the affected, in this case, the Jewish people that owned the business, because with this we can know the other side of the story.
 
        
             
        
        
        
The period between the end of the middle ages and the present 
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The industrial revolution indeed was a great factor in the growth of population in industrialized countries. The population in industrialized countries had a sudden rise or increase due to the bigger and greater opportunities provided by the country thus, alluring more people to migrate. 
        
             
        
        
        
Jane Addams' social work movement was sparked through the witnessing of social injustice toward women of her time. In the United States at the time, women lacked many rights that men already had. Seeing this as a problem of inequality in the United States, this inspired Jane Addams to begin her movement of social work to aid women's causes in the United States with the ultimate goal of equality in the form of voting rights, property ownership, etc