The american colonist wrote the declaration of independence, in because the British government:

The Declaration summarized the colonists' motivations for seeking their independence. By declaring themselves an independent nation, the American colonists were able to conclude an official alliance with the government of France and obtain French assistance in the war against Great Britain.

Following the signing of the Declaration of Independence, the document that established the United States as a new nation, the thirteen colonies declared themselves free of the United Kingdom. ... They were angry that the colonies were forced to follow British rule but were not allowed representation in Parliament.

The government treated British citizens in the colonies differently from those at home. It demanded special taxes from the colonists. It also ordered them to feed British troops and let them live in their houses. Britain claimed that the soldiers were in the colonies to protect the people.