I’d go with C. Jazz and the dance “The Charleston” were big and new in the 1920s.
Not A, because The Great War, World War I, ended in 1918.
Not B, because the Panama Canal was built from 1904 to 1914.
Regarding D: Telegraphs were sent from the 1840s-1977. If the question is supposed to have more than one answer, this would be a good second answer. But if the question has only one answer, go with C.
        
             
        
        
        
Answer:
Sea of Darkness            
Explanation:
Before the discovery of America by Christopher Columbus, many of the early sailors call the Atlantic ocean s sea of darkness. European called the mysterious sea to have monsters and the fear, scared sailors who did not want to cross the Ocean. This myth was broken by Columbus when he decided to take a new sea route from the East to find India.  
 
        
             
        
        
        
Answer:
the emergence of capitalism, European imperialism, efforts to mine coal, and the effects of the Agricultural Revolution. Capitalism was a central component necessary for the rise of industrialization.
 
        
             
        
        
        
Answer: Power to fire workers in private business.