Here are the answers to your questions:
Question 1: When did the Emancipation Proclamation go into effect?
Answer: A January 1, 1863
Question 2: How many days elapsed between the end of the battle at Gettysburg and the end of the siege at Vicksburg?
Answer: B 7 days
Question 3: General Sherman seized Savannah, GA, just prior to what holiday?
Answer: C Christmas
Question 4: Which of these events took place LAST?
Answer: C Lincoln Wins Reelection
If you have more questions or need further information, feel free to ask!