Answer: The Declaration of Independence explains why the 13 colonies became the 13 states, and why they broke away from Britain.
Explanation: Back then, King George imposed taxes on the colonies. The colonies did not want to have it. They staged rebellious acts against Parliament. As the people of the 13 colonies continued to be rebellious, it led to the American Revolution. After years and years of the revolution, a man named George Washington helped the colonies defeat the British and helped achieve their freedom. After a year of their victory, our founding fathers came up with this declaration declaring freedom from Britain. This quote is from online, it will help understanding it better: "It says that people have rights that cannot be taken away, lists the complaints against the king, and argues that the colonies have to be free to protect the colonists' rights".