Answer:
See below.
Explanation:
World War I 1914-1918
Isolationism (after World War I) 1920s - 1930s
World War II 1941-1945
participation in the U.N. 1945-present
Containment (after World War II) 1947-1989
Gulf War 1991
 
        
             
        
        
        
Answers: 
b. 1776
a. the Declaration of Independence
a. All nations are conceived in liberty
        
             
        
        
        
Answer:
the correct answer is B 
Explanation:
The grandfather clause was widley used more  by the southern states during the reconstruction and the jim crow era, were they would ask black voters to show their grandparent's aquired or granted rights; sometimes even asking to prove the ownership of said granparent over a piece of land with a property title 
 
        
             
        
        
        
The main factor was the utilization of raised field agriculture. They would build these fields that had been artificially raised to a certain height along a flowing water source (mostly rivers but occasionally streams as well in some cases). When tropical weather patterns would cause said water sources to flood, instead of washing away the crops, it would act as irrigation for the raised fields. Securing a steady food source allowed the Mayans to support a large civilization in the tropical regions they called home.
        
                    
             
        
        
        
For his part, Hitler wanted a nonaggression pact with the Soviet Union so that his armies could invade Poland virtually unopposed by a major power, after which Germany could deal with the forces of France and Britain in the west without having to simultaneously fight the Soviet Union on a second front in the east.