Answer:
Poor working conditions and low wages 
Explanation:
During the 1800s, there was experienced rapid industralization.
The set up industries needed both skilled and bnon-skilled labour for their operations.
Most of the Population resorted to jobs available in the industries.
Due to the emergence of the working and ruling classes, the workers felt oppressed by the emeployers.
In a abid to pull together and fight for their rights, laboures formed labour unions to adress their issues among them being poor working conditions and low wages.
 
        
             
        
        
        
Answer:
world war 2
Explanation:
the us declared war a day after the pearl harbor bombings. This was during ww2
 
        
             
        
        
        
New<span> Hampshire became the ninth state to approve the </span>Constitution<span> in June, but the key States of </span>Virginia and New York<span> were locked in bitter debates. Their failure to </span>ratify<span> would reduce the </span>new<span> union by two large, populated, wealthy states, and would geographically splinter it.</span>
        
             
        
        
        
Da Vinci has influenced inventors even to this day. He has some of the earliest known plans and prototypes for parachutes, diving suits, and a form of a battle tank. His plans have increased the amount contributions to modern inventions. Now in his time I don't know much.     
        
             
        
        
        
Aurelius killed Christians, while Pius was good to his people and kept peace and this was the way Marcus Aurelius and Antoninus Pius differed from each other. The correct option among all the options that are given in the question is the third option. I hope this is the answer you were looking for and it has helped you.