Why was the Declariation of Independence written? What issues were and were not adressed in the Declaration of Independence?

The Declaration of Independence was written as a foundation of the U.S. It showed the freedom from Britain. It also made several more colonies that had formed together and created the United States. The list stated some colonial disagreements that went against King George. It also said the importance of happiness, freedom for everyone in the country. The Declaration of Independence did not address the wars or the way Britain treated the 13 colonies.