Answer:
The Gilded Age
Explanation:
Technologies were developing rapidly, which led to the rapid economic growth with the transportation and manufacturing industries. During the Gilded Age, there was a large amount of capital floating in society among wealthy people. More immigrants began to settle in cities to work in factories. 
The significant industries were steel, oil, banking, railroad, timber, sugar, liquor, meatpacking, mining, tobacco, and textile industries. Some of the entrepreneurs were Andrew Carnegie, John D. Rockefeller and Henry Frick. 
The telephone, electricity, and the light bulb were some of the new inventions by Alexander Graham Bell, Thomas Edison, and Nikola Tesla and others. 
 
        
                    
             
        
        
        
C because the D.O.I states that they are separating from their "mother" great Britain
        
             
        
        
        
Pass law was the most hated by them
        
             
        
        
        
Because the Chinese workers work more for less pay