The Declaration of Independence was written to announce the American colonies' separation from Great Britain and to justify this action by explaining the colonies' grievances against British rule. It was intended to rally support among colonists and seek international backing by presenting Enlightenment ideals such as natural rights to "life, liberty, and the pursuit of happiness," and asserting the right to alter or abolish oppressive governments. The document aimed both to formally declare independence and to morally justify the colonies' decision by listing the ways in which the British king had mistreated them. It was also a strategic move to unify the colonies and gain allies, particularly foreign support, during the Revolutionary War.