I know that this is the beginning of Gettysburg Address, but I don't know what actually it means: Why four score? I guess seven years ago can be calculated and the answer will be-perhaps Declaration of Independence? Thank you
A score is 20 years, thus four score and seven years ago equals 20 X 4 = 80 + 7 = 87 years ago. The Gettysburg Address was delivered by Abraham Lincoln 87 years after the signing of the Declaration of Indenpendence.