The pivotal historical document that declared the rights of the individual in early America is the Declaration of Independence, written in 1776. Authored primarily by Thomas Jefferson, this document articulated the colonies' reasons for seeking independence from British rule. It emphasized the principles of natural rights, including the rights to life, liberty, and the pursuit of happiness. The declaration served not only as a statement of independence but also as a foundation for future democratic ideals and human rights movements in the United States and worldwide.