The was written to show a new theory of government, reasons why they were separating from England, and a formal declaration of war. It gave the 13 colonies freedom from England's laws. The man responsible for writing the Declaration was Thomas Jefferson. He wrote the Declaration between June 11, 1776 and June 28, 1776. Benjamin Franklin and John Adams looked at what Jefferson had written and made some changes to the Declaration. On July 4, 1776 Congress adopted the Declaration and it was signed by: John Hancock, Button Gwinnett, Lyman hall, G ....