The United States Revolutionary War raged from 1775 until 1783. America celebrates July 4th, 1776 as the signing of the Declaration of Independence and the birth of the United States.
John Hancock was the first to sign and not all signed on the same day.
None of the signers were born in America.
It was signed at Independence Hall in Philadelphia, Pennsylvania.
Although Thomas Jefferson wrote the first draft, many other people revised it.