Question

read the opening to the gettysburg address, and then answer the questions. how long is “four score and seven years?” 87 years complete lincoln says the us was dedicated to liberty. equality. civil war. in this reading: score means \twenty\ conceived means \born\ or \created\ proposition means \idea\ or \proposal\ endure means \survive\ \four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal. now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated can long endure.\

Explanation:

The Gettysburg Address mentions "four score and seven years ago". Since a score is 20 years, four score is 4*20 = 80 years, and adding seven more years gives 87 years. Lincoln states the US was dedicated to the proposition that all men are created equal, which is related to the idea of equality. Also, the nation was conceived in liberty, so liberty is another dedication. Civil - war is not what the nation was dedicated to but rather a test for the nation.

Answer:

How long is "four score and seven years?": 87 years
Lincoln says the US was dedicated to: liberty, equality