Answer:
The Chinese and the Mexican-Americans were the bulk of workers who built the American transcontinental rairoad in the 19th century. The Chinese arrived in large numbers in the second half of the century escaping poverty and turmoil in China, and there were large Mexican populations living in the USA. Only agricultural work offered more employment to Mexicans than the railroad works. 
Explanation:
 
        
                    
             
        
        
        
When Sputnik went into orbit in 1957, America went into a panic. Only President Dwight Eisenhower retained his composure and understood that the United States was far superior to the Soviet Union in scientific research as well as in military firepower. 
 
        
             
        
        
        
Answer:
Orator: is a person that demonstrates outstanding skill and power as a public speaker.
State's rights: is the belief that the country was founded by and for the states, and where each state keeps final power for itself.
Tariff: is a tax or duty on goods brought from a foreign nation
Nullification: is the act of canceling something, when one thing overcomes or overrides another, basically erasing the effects of the first thing
Great Debate: was between Senator Hayne of South Carolina and Senator Webster of Massachusetts on the topic of protectionist tariffs
 
        
             
        
        
        
The answer is D. Principalities were small territories that were run by Russian rulers.
This due because they population was very small, and it still hasn't reached by the mongol Empire But they were very close with Russian Territories