Answer:  Choice C. 
They worried that Lincoln would try to end slavery in the United States.
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Explanation:
The issue of slavery was debated and fought over for many years before the election of 1860. It was only until Lincoln became president that sparked the southern states to secede, which led to the Civil War. Proof of this is found in the many Declaration of Secession documents produced by each state that left the union. This is basically a document explaining why they left the United States to form the Confederate States of America (CSA) aka the Confederacy. 
In modern times, some people mistakenly claim that the Civil War wasn't over slavery but rather states' rights. This is simply false. The documents I mentioned prove that slavery was the core issue. More proof is the various states having issues with the fugitive slave act, in that the northern states didn't really adhere to the law to the level of the southern states' liking. I guess you could argue that states' rights were involved, but specifically the south fought to have the right to own slaves. In short, it's all about getting the correct context. Expanding that context, simply look at the decades preceding the war and notice all of the tension involving whether a new state was a free state vs a slave state.
 
        
             
        
        
        
Answer: economic policy
Explanation:
Because the government is always raising taxes and looking for ways to save money. For example the recent boiling issue and the boiling prices raise very very high. 
 
        
             
        
        
        
Answer:
True
Explanation: Albert Gallatin was Secretary of the treasury on Thomas Jefferson's cabinet.
 
        
             
        
        
        
It was the first Southern state to leave the Union and the first shots to start the Civil War was started in south carolina.
Hope this helps! :D
        
                    
             
        
        
        
The most important post war tax was the stamp act of 1765, causing everything that was made to have a stamp, confirming that the tax had been paid but was repealed because the colonists didn’t like it. More acts were made to raise revenue but colonists weren’t happy either. Lawyer John Dickinson argued that “taxation without representation was not allowed”. In return, the tea act was made to tax tea imported. The colonists thought the best way to protest the act was to turn away ships carrying tea. And in places like New York, they were able to do so, but not in Boston because the governor of Massachusetts did not allow for ships to be turned away. So the colonists dumped all the tea, also known as the Boston tea party. The British were angry at the Americans so they closed the harbor, town meetings were banned, etc. this increased resistance from both Massachusetts and Britain to which led the revolutionary war. Then shortly after, congress voted to separate from Great Britain and then two days later the declaration or independence was signed :)