What was the key component in the idea of the restoration of the union 1. abolishing slavery
2. pardoning the high ranking confederate
3. swearing union loyalty

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increase in population

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donald trump is the republican president of the united states. he is the 45th president. he's important because he is the leader of the u.s.   he decides how the laws of the united states are to be enforced and chooses officials and advisors to run the executive branch. the constitution makes the president commander in chief of the nation's armed forces. he is a very important person.