A historian using the historical thinking skill of chronological thinking might put evens that took place in history in "chronological order" in the hopes of understanding why certain events took place after others. This helps the historian determine "cause and effect". 
        
                    
             
        
        
        
Answer:
Line of succession US president
Explanation:
provided for succession to the presidency, in the event both the office of the president and the vice president were vacant, by, first, the president pro tempore of the Senate, followed by, if need be, the speaker of the House.
 
        
             
        
        
        
According to the National Archives "The Constitution provides that an amendment may be proposed either by the Congress with a two-thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the State legislatures."
So, this provides for a Federal and a State option for passing amendments. 
 
        
             
        
        
        
Answer:B
Explanation:
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Members of a campaign staff include volunteer coordinators, communications directors, and campaign managers.