One of Josephine Baker’s most famous professional tasks was tracking down Mary Mallon (“Typhoid Mary”) in 1907. The way Ms. Mallon’s case was handled raises some interesting questions even today about conflicts between personal rights and public health: George Soper at the Department of Health Laboratories had investigated seven family epidemics of typhoid going back to 1900. He found that they were all linked to the cook [Mary Mallon] in each family. 
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Answer:
The Surrender of Germany
Explanation:
None of the other events happened after the Yalta Conference
 
        
                    
             
        
        
        
Persia was no longer the great power it once had been