What caused colonists to break away from their mother country, England, by signing the Declaration of Independence? (write 3-5 sentences)

Although England has many reasons as to why the colonies were unjustified in waging a war, the colonists still were justified because the “Declaration of Independence” clearly stated the colonist's problems against the king. They said that they were breaking away from England to become The United States of America.
Revolutionary governments in the colony-states and the Second Continental Congress cut ties with Britain, one by one, and at length on July 2, 1776, the Congress, speaking for all America, severed the last one, declaring, “These United Colonies are, and of right ought to be, free and independent states.” Two days later ...