Why July 4th?

How did it happen that we came to celebrate July 4 as our nation's Independence Day? The Second Continental Congress actually voted to approve a resolution of independence on July 2, 1776. After making the decision to separate themselves from England, the Congress then set about writing a declaration to set out their reasons for taking this action. They debated and revised the wording of the document for a couple of days, finally agreeing to the wording that has come down to us on July 4. But it seems that the more important date would have been the date that they actually decided on independence, July 2. John Adams certainly thought that was the important date. He wrote his wife Abigail: The second day of July, 1776, will be the most memorable epoch in the history of America. I am apt to believe that it will be celebrated by succeeding generations as the great anniversary festival. It ought to be commemorated as the day of deliverance, by solemn acts of devotion to God Almighty. ...