July 4th, 1776 is known as America's birthday because that was when the Declaration of Independence was unanimously approved by the congressional delegates. It was written on July 2nd, 1776. There's more information about the Declaration of Independence in the link at the bottom.
Ever wonder what happened to the men who signed the Declaration? Read about what happened to them here.
We thank God for our free nation, and we thank our military for keeping us free.
God bless our military!