Thomas Jefferson served as the main author of the Declaration of Independence.

Which was composed in 1776 to express the American colonies' wish to break free from British control. Jefferson highlighted essential principles in his writing, including the rights to "life, liberty, and the pursuit of happiness," while outlining grievances against King George III. His articulate language embodied Enlightenment ideals and sought to unite the colonies in their fight for freedom. The Declaration signified the United States' founding and inspired subsequent movements advocating for democracy and human rights globally.