The Declaration of Independence was adopted on July 4th, 1776 in the United States.
United States . On July 4 , 1776 , during the course of the American Revolutionary War , the colonies unanimously adopted the Declaration of Independence . The Declaration of Independence is the statement adopted by the Second Continental Congress meeting at the Pennsylvania State House ( Independence Hall ) in Philadelphia on July 4 , 1776 , which announced that the thirteen American colonies , then at war with the Kingdom of Great Britain , regarded themselves as thirteen newly independent sovereign states , and no longer under British rule . Instead they formed a new nation -- the United States of America .