"Four score and seven years ago...equals." Why is this an especially effective way for Lincoln to begin his speech?

Find the explanation below.

Explanation:

A score represents twenty years. Thus four scores meant 20 * 4years which equals 80years. Eighty years plus seven years equals eighty-seven years. Eighty-seven years ago before Abraham Lincoln delivered the Gettysburg address in 1863 dated back to 1776 when the Declaration of Independence was signed.

It was important that he made reference to this year because he wanted to draw attention to the sacrifices made by the founding fathers of the American nation and to highlight the values which they sought for. These values included the quest for liberty and equality among all the citizens of the country.

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