Went around 4 score and seven years ago
Then went to Hershey and drown in chocolate
Actually, Lincoln was historically inaccurate with his characterization of "Four score and seven years ago our fathers brought forth on this continent, a new nation....", as the USA didn't exist as a single nation until the Constitution went into effect in 1788. The Revolution was about independence from Britain, not creating a multi-state country. People hardly thought beyond their own town & county & state at most until after the constitution went into effect & still didn't grasp the full meaning for another generation.
Under the previous Articles of Confederation in effect since 1781, with nothing binding at all before that document, each state was its own nation with its own currency, tariffs, & foreign relations. Each state had one vote & to pass anything required a unanimous vote. Being an American didn't exist.
That was unworkable & things were falling apart, A few good men - Washington, Hamilton, Madison & John Jay in particular - literally plotted to get a Constitutional Convention called, a document created, & then passed. Exciting story about which coincidentally I just finished reading a book about two days ago.
Net, the GA ought to have opened with, "Three score and fifteen years ago....".